Quando Jeffrey Goldberg dell’Atlantic ha fatto trapelare accidentalmente un messaggio di gruppo privato di alti funzionari statunitensi su un possibile attacco contro gli Houthi nello Yemen, ha suscitato molto scherno sui social media.

Ma al di là dell’imbarazzo e del commento politico, l’incidente ha lanciato un messaggio importante: le agenzie di intelligence americane utilizzano Signal, una popolare app crittografata, e ritengono che sia sicura.

Sebbene siano regolarmente in corso dibattiti sulla sicurezza della crittografia nei servizi di messaggistica come Signal, Telegram e WhatsApp, il fatto che vengano utilizzati anche dagli ufficiali dei servizi segreti parla da sé. Soprattutto se si considera che alla recente chat a porte chiuse di Signal erano presenti il ​​vicepresidente J.D. Vance, il direttore dell’intelligence Tulsi Gabbard, il segretario alla Difesa Pete Hegseth, il direttore della CIA John Ratcliffe, il consigliere per la sicurezza nazionale Mike Waltz e altri funzionari dell’amministrazione.

Come ha ammesso Waltz su Fox News, è stato lui stesso a creare il gruppo e ad aggiungervi inavvertitamente Goldberg, poiché il numero era salvato nei suoi contatti con un nome diverso, presumibilmente quello di un dipendente governativo.

Il problema non è Signal, ma il modo in cui le persone gestiscono i contatti. Come notato Secondo il professor Ryan Ellis della Northeastern University, nessuna protezione potrà mai salvarvi se qualcuno invia segreti al destinatario sbagliato.

Durante un’audizione al Senato del 25 marzo, il direttore della CIA Ratcliffe ha confermato che Signal era stato installato sul computer della sua azienda, come quello della maggior parte dei dipendenti, fin dall’inizio del suo mandato presso l’agenzia. L’applicazione è ufficialmente approvata per la corrispondenza interna e viene utilizzata non solo dalla CIA, ma anche da altre agenzie governative.

È stato addirittura raccomandato dalla Casa Bianca e dalla CISA, l’agenzia statunitense per la sicurezza informatica, per i funzionari che potrebbero essere presi di mira dalle agenzie di intelligence straniere.

Signal non è l’unico in questa lista. Professore Frederick Scholl della Quinnipiac University aggiunge , tra i messenger sicuri troviamo anche Briar, Session, SimpleX, Telegram, Threema, Viber, Wire e altri. Ed è in pieno svolgimento anche il passaggio di massa ai messaggi RCS criptati al posto dei normali SMS: ora anche Apple e Google supportano una protezione compatibile dei messaggi tra le loro piattaforme.

Tuttavia, la popolarità della crittografia suscita anche critiche. I giornalisti dell’Associated Press hanno scoperto che i servizi di messaggistica sicura sono utilizzati attivamente da funzionari a tutti i livelli, dai governatori ai senatori, fino ai consigli scolastici. Ciò solleva il timore che il processo decisionale si stia spostando nell’ombra, al di fuori dei canali ufficiali. Ma nonostante ciò, le agenzie governative continuano a insistere sul fatto che la sicurezza richiede la crittografia, soprattutto nell’era dello spionaggio digitale.

Nessuno può dare la garanzia assoluta che nessun messenger verrà hackerato. Una cosa è certa: se anche la CIA consiglia di utilizzare Signal, allora vale sicuramente la pena prenderlo in considerazione. La cosa principale è controllare attentamente chi aggiungi alla chat.

L'articolo Signal è abbastanza sicuro per la CIA e per il CISA. Lo è anche per te? proviene da il blog della sicurezza informatica.

When the AMSAT-OSCAR 7 (AO-7) amateur radio satellite was launched in 1974, its expected lifespan was about five years. The plucky little satellite made it to 1981 when a battery failure caused it to be written off as dead. Then, in 2002 it came back to life. The prevailing theory being that one of the cells in the satellites NiCd battery pack, in an extremely rare event, shorted open — thus allowing the satellite to run (intermittently) off its solar panels.

In a recent video by [Ben] on the AE4JC Amateur Radio YouTube channel goes over the construction of AO-7, its operation, death and subsequent revival are covered, as well as a recent QSO (direct contact).
The battery is made up of multiple individual cells.
The solar panels covering this satellite provided a grand total of 14 watts at maximum illumination, which later dropped to 10 watts, making for a pretty small power budget. The entire satellite was assembled in a ‘clean room’ consisting of a sectioned off part of a basement, with components produced by enthusiasts associated with AMSAT around the world. Onboard are two radio transponders: Mode A at 2 meters and Mode B at 10 meters, as well as four beacons, three of which are active due to an international treaty affecting the 13 cm beacon.

Positioned in a geocentric LEO (1,447 – 1,465 km) orbit, it’s quite amazing that after 50 years it’s still mostly operational. Most of this is due to how the satellite smartly uses the Earth’s magnetic field for alignment with magnets as well as the impact of photons to maintain its spin. This passive control combined with the relatively high altitude should allow AO-7 to function pretty much indefinitely while the PV panels keep producing enough power. All because a NiCd battery failed in a very unusual way.

youtube.com/embed/7wSEgHYWmMI?…

hackaday.com/2025/03/29/amsat-…

We recently got a note in the tips line from [Tavis Gustafson], who is one of the developers of Tronbyt — a replacement firmware and self-hosted backend that breaks the Tidbyt smart display free from its cloud dependency. When they started the project, [Tavis] says the intent was simply to let privacy-minded users keep their data within the local network, which was itself a goal worthy enough to be featured on these pages.

But now that Tidbyt has been acquired by Modal and has announced they’ll no longer be producing new units, things have shifted slightly. While the press release says that the Tidbyt backend is going to stay up and running for existing customers, the writing is clearly on the wall. It’s now possible that the Tronbyt project will be able to keep these devices from ending up in landfills when the cloud service is inevitably switched off, especially if they can get the word out to existing users before then.

What’s that? You say you haven’t heard of Tidbyt? Well, truth be told, neither had we. So we did some digging, and this is where things get really interesting.

A look inside the original Tidbyt.
It turns out, Tidbyt started its life as a project on Hackaday.io by [Rohan Singh] back in 2020. The hardware consists of a 64×32 HUB75 LED panel and a small custom PCB holding an ESP32 inside of a wooden box, and while it doesn’t appear to have ever been an open source device per se, how it worked internally was hardly a secret. The software side of things however was released on GitHub, which likely made creating the custom firmware that much easier for [Travis] and co.

By March of 2021, Tidbyt was on Kickstarter, where it blew past its goal in 48 hours and ultimately brought in just shy of one million dollars. In October of 2023, they were back on Kickstarter with a second generation of Tidbyt hardware, and this time brought in even more money than the first time.

So what’s the takeaway from all of this? Well, first of all we can’t believe this whole thing was developed right under our noses without us even realizing it. This seems like a good time as any to remind folks to drop us a line if you’re working on something cool and you want to share it with the class. We would’ve loved to connect with [Rohan] as Tidbyt was on the rise.
Rohan Singh (center) poses with Modal founders, three years after posting the project on Hackaday.io
But more importantly, it’s a great example of just how much better devices that were developed in the open can weather a storm than their proprietary counterparts. [Rohan] kept enough of Tidbyt open to the community that they were able to successfully create their own firmware and backend — a decision which now might end up being the only thing keeping some of these devices up and running in the future.

Oh yeah, and keep starting awesome projects on Hackaday.io and turning them into multi-million dollar ventures too. We like that also.

hackaday.com/2025/03/29/open-s…

Our next member meeting is Sunday, April 6th. We start at 8pm and will end once our agenda is complete or 9pm, whichever comes sooner.

To participate:

• go to communitybridge.com/bbb-room/m…;
• enter your name;
• enter the access code listed on the page;
• click the Join button.

Summaries of the meetings and agendas are at our wiki. You can view the 2025, 2024, 2023 and 2022 meeting recordings.

masspirates.org/blog/2025/03/2…

Gli scienziati del Korea Institute of Science and Technology di Daegu hanno creato una batteria nucleare compatta in grado di generare elettricità per decenni senza i rischi solitamente associati alla radioattività.

Il nuovo dispositivo è una cella a colorante beta-voltaico alimentata dal carbonio-14, un isotopo radioattivo che emette particelle beta. Queste particelle, essenzialmente elettroni ad alta energia, colpiscono un semiconduttore di biossido di titanio rivestito con un colorante a base di rutenio, facendone uscire gli elettroni e creando una corrente elettrica.

L’emivita del carbonio-14 è di circa 5.730 anni, il che consente teoricamente alla batteria di conservare metà della sua capacità iniziale dopo migliaia di anni. Ma nella pratica la produzione diminuisce molto più rapidamente: i materiali sono ancora soggetti a distruzione. Tuttavia, il potenziale della tecnologia è impressionante. Il prototipo attuale fornisce 20,75 nanowatt per centimetro quadrato per millicurie con un’efficienza del 2,86%. In parole povere, questa batteria delle dimensioni di un’aspirina fornisce circa lo 0,4% della potenza necessaria per far funzionare una calcolatrice tascabile. Per funzionare, sarebbero necessari altri 240 elementi circa.

Sebbene la sua potenza sia modesta, è sufficiente ad alimentare dispositivi medici impiantabili come pacemaker o sensori per la raccolta di dati ambientali. La tecnologia può essere utilizzata anche per alimentare tag RFID, microcircuiti e caricare condensatori in dispositivi che richiedono un impulso energetico breve ma potente. Questa direzione è promettente per l’elettronica ad altissima efficienza energetica, ma è ancora nelle prime fasi di sviluppo.

Il vantaggio principale è la sicurezza. Contrariamente a quanto si pensa comunemente del termine “nucleare“, il dispositivo non richiede una protezione complessa. Le particelle beta del carbonio-14 sono deboli e si trovano ovunque, anche nel corpo umano. Per la schermatura è sufficiente uno strato sottile di alluminio. La batteria è completamente solida, priva di materiali infiammabili e, in termini di sicurezza, può addirittura superare le batterie agli ioni di litio, soggette a surriscaldamento ed esplosioni.

In generale, l’idea delle batterie nucleari non è nuova. I primi dispositivi di questo tipo apparvero negli anni ’50, quando negli USA venne sviluppato un elemento basato sullo stronzio-90. Successivamente, negli anni ’60, i generatori termoelettrici a radioisotopi con plutonio-238 iniziarono a essere utilizzati nelle missioni spaziali. Uno dei primi esempi fu il satellite Transit 4A, utilizzato in uno dei primi sistemi di navigazione satellitare, il predecessore del GPS.

Negli ultimi anni l’interesse per le batterie nucleari è tornato a crescere. Ad esempio, Betavolt ha introdotto una batteria da 3 volt con nichel-63 e un semiconduttore al diamante, progettata per durare 50 anni. E Arkenlight sta sviluppando batterie basate sui diamanti al carbonio-14. Sebbene i principi rimangano gli stessi, i progressi nei materiali e nella sicurezza stanno avvicinando la tecnologia all’uso nel mondo reale, senza la necessità di costruire reattori nucleari.

L'articolo Batterie nucleari sicure? Gli scienziati creano una batteria che può durare migliaia di anni proviene da il blog della sicurezza informatica.

We ran a story about a wall-mounted plotter bot this week, Mural. It’s a simple, but very well implemented, take on a theme that we’ve seen over and over again in various forms. Two lines, or in this case timing belts, hang the bot on a wall, and two motors drive it around. Maybe a servo pulls the pen in and out, but that’s about it. The rest is motor driving and code.

We were thinking about the first such bot we’ve ever seen, and couldn’t come up with anything earlier than Hektor, a spray-painting version of this idea by [Juerg Lehni]. And since then, it’s reappeared in numerous variations.

Some implementations mount the motors on the wall, some on the bot. There are various geometries and refinements to try to make the system behave more like a simple Cartesian one, but in the end, you always have to deal with a little bit of geometry, or just relish the not-quite-straight lines. (We have yet to see an implementation that maps out the nonlinearities using a webcam, for instance, but that would be cool.) If you’re feeling particularly reductionist, you can even do away with the pen-lifter entirely and simply draw everything as a connected line, Etch-a-Sketch style. Maslow CNC swaps out the pen for a router, and cuts wood.

What I love about this family of wall-plotter bots is that none of them are identical, but they all clearly share the same fundamental idea. You certainly wouldn’t call any one of them a “copy” of another, but they’re all related, like riffing off of the same piece of music, or painting the same haystack in different lighting conditions: robot jazz, or a study in various mechanical implementations of the same core concept. The collection of all wall bots is more than the sum of its parts, and you can learn something from each one. Have you made yours yet?

(Fantastic plotter-bot art by [Sarah Petkus] from her write-up ten years ago!)

This article is part of the Hackaday.com newsletter, delivered every seven days for each of the last 200+ weeks. It also includes our favorite articles from the last seven days that you can see on the web version of the newsletter. Want this type of article to hit your inbox every Friday morning? You should sign up!

hackaday.com/2025/03/29/contag…

Our colleague from the Pirate Party of Germany in Munich, Alexander Kohler, recently attended the Paris Defence and Strategy Forum (PDSF). The event was held at the École Militaire in Paris from March 11 to 13. The 2025 forum was themed “Europe at the Crossroads”. The event focused on defense alliances, geopolitical challenges, and the evolving global landscape. Mr. Kohler is the leader of the Pirate Security Conference, which takes place in February each year. For over 10 years the PSC has provided a space to discuss how technological advancements redefine security. ​The event takes place alongside the Munich Security Conference, drawing in experts who participate in both events. The insights gained from the PDSF help to engage diverse perspectives on digital rights and security policies.​

If you are interested in learning more about the PDSF, please read here: parisdefenceandstrategyforum.c…

For more information about the PSC, please read here: events.pirate-secon.net/

pp-international.net/2025/03/p…

Dear Friend of Press Freedom,

Attacks on press freedom that used to seem outlandish or unlikely in the United States are happening across the country. Here’s the latest.

Targeting student op-ed writers threatens the free press

On Wednesday we published an article about how India’s revocation of American journalist Raphael Satter’s overseas citizenship to punish him for his reporting was a “not-so-farfetched” cautionary tale for the United States. “Once a government claims the power to use residency status as a cudgel to regulate speech, things escalate quickly and unpredictably,” wrote our advocacy director, Seth Stern.

But cautionary tales become realities quickly these days. The same day we published that piece, news broke that the Trump administration had abducted Rumeysa Ozturk, a Tufts University graduate student from Turkey. Masked men grabbed her off the street after an organization called Canary Mission had flagged her “anti-Israel activism,” which apparently consisted solely of cowriting an op-ed that was critical of the Israel-Gaza war. She has reportedly been transferred to a facility in Louisiana, despite a court order against moving her out of Massachusetts. The arrest comes weeks after reports that Columbia University investigated an op-ed writer in response to pressure from the administration.

We said in a statement that “if reports that Ozturk’s arrest was over an op-ed are accurate, it is absolutely appalling. No one would have ever believed, even during President Donald Trump’s first term, that masked federal agents would abduct students from American universities for criticizing U.S. allies in student newspapers. Anyone with any regard whatsoever for the Constitution should recognize how fundamentally at odds this is with our values.” We also joined a letter from the Student Press Law Center and other press freedom and collegiate organizations condemning the abduction and calling upon Tufts and Congress to take action and put themselves on the right side of history.

Max Frankel’s press freedom legacy

Max Frankel, a New York Times reporter and editor who helped push for the publication of the Pentagon Papers, died Sunday at the age of 94. A Pulitzer Prize-winning journalist, Frankel was well known for his decades of reporting. But it’s another piece of writing, not initially published in a newspaper, that holds a special place in First Amendment history.

An affidavit by Frankel filed in New York Times Co. v. United States, better known as the Pentagon Papers case, has become one of the most important public documents laying out the realities of national security reporting and Washington’s unspoken rules around government secrecy and leaks. Read more about Frankel’s legacy from FPF Senior Advocacy Adviser Caitlin Vogus.

NPR and PBS are just low-hanging fruit

At a congressional hearing this week, lawmakers attacked NPR and PBS for perceived bias and questioned whether there is still a need for the government to fund media these days. Trump separately said he wants both outlets defunded.

The stunt would’ve been concerning in normal times, but it’s particularly worrying now. Whether or not you think there’s a legitimate debate to be had about the government funding journalism, it’s clear that public media is just the low-hanging fruit — this administration intends to seize upon any and every legal theory, however far-fetched (or just ignore the law entirely), to punish the free press.

We joined a letter with the Committee to Protect Journalists and Reporters Without Borders (RSF) about the dangers of the administration’s attacks on NPR and PBS. Stern also had more to say on DW’s The Day, which also airs on several PBS stations.

New executive order gives DOGE more control over agency records

A new executive order has the potential to grant the Department of Government Efficiency more control over agency records, and hints that the Trump administration may be considering issuing a new executive order on classification.

Both could spell bad news for the public’s right to know. Read more here from our Daniel Ellsberg Chair on Government Secrecy, Lauren Harper.

Texas anti-SLAPP bill wouldn’t only impact journalists

The nonprofit consumer advocacy organization Public Citizen understands the importance of laws against frivolous lawsuits targeting speech, known as strategic lawsuits against public participation, or SLAPPs.

That’s why their litigation group has represented several Texas consumers who have been sued over their speech. For the latest in a series of interviews about the implications of attempts to weaken Texas’ anti-SLAPP laws, Vogus talked to Public Citizen attorney Paul Levy. Read the interview here.

What we’re reading

Israeli strikes kill two Gaza journalists, including Al Jazeera reporter (The Washington Post). Journalists are civilians, and targeting them is absolutely illegal and inexcusable. Everyone involved in these assassinations should be held accountable, including U.S. officials who bankroll war crimes.

Security lessons from a Signal group chat (FPF). Our digital security team explores what journalists can learn from this week’s big story — Atlantic editor Jeffrey Goldberg’s accidental inclusion in a sensitive Signal group chat about bombing apartment buildings and whatnot.

The AP’s freedom of speech — and yours (The Wall Street Journal). “Today the U.S. government wants to control the AP’s speech. Tomorrow it could be someone else’s.” Read why you should care about the White House banning the Associated Press, regardless of your political views.

Leakers to Musk: We’re ‘not Elon’s servants’ (Politico). “The public deserves to know how dysfunctional, destructive, and deceptive all of this has been and continues to be,” a Food and Drug Administration employee told Politico.

Was chaotic JFK declassification marred by National Archives firings? (The Classifieds). Harper questions whether errors in the recent declassification of JFK records, including exposing social security numbers, had something to do with Marco Rubio taking over the National Archives while also serving as Secretary of State.

freedom.press/issues/student-a…

Local newspapers play an indelible role in American journalism, reporting some of the country’s biggest stories from its smallest communities.

So when authorities in Marion, Kansas, and Clarksdale, Mississippi, attacked their local newspapers for coverage with which they disagreed, the outlets themselves became the story. And outrage quickly ignited across the U.S.

In February, a judge granted the City of Clarksdale an order requiring The Clarksdale Press Register to delete an editorial raising questions about transparency within the city’s government. And in 2023, police raided the Marion County Record’s newsroom and its publisher’s home over the paper’s use of a public website to verify a news tip.

In both cases, the officials involved had longstanding grudges with the newspapers over critical coverage long before the attacks made national headlines.

To get a first-hand perspective on the fight against these unconstitutional efforts to quash free speech, we spoke to Clarksdale Press Register Publisher Wyatt Emmerich and Marion County Record Publisher Eric Meyer in an online webinar on March 26, 2025.

Meyer said the similarities between his and Emmerich’s experiences are “just overwhelming.” One of those similarities was the backlash that followed.

“When they were raiding our office, I said, ‘This is going to be on the front page of The New York Times,’ and they laughed at me,” Meyer said. “It was on the front page of The New York Times.”

The police raid of the Marion County Record and the takedown order issued to The Clarksdale Press Register both stem from prior butting of heads with their local governments. In Meyer’s case, the paper had a “contentious” relationship with the town because “we had the audacity to actually report news and reported in a way that was not positive and uplifting to the city.”

Similarly, Emmerich said Clarkdale’s mayor took issue with their editorials “because he didn’t like our coverage,” and even organized a boycott against the paper. “The mayor offered me $30,000 to fire the editor,” Emmerich said. “We were the fly in the ointment, and he wanted to get rid of us as best he could.”

“He’s a younger mayor and just doesn’t understand the role of a traditional newspaper,” Emmerich continued. “He assumed that because he was mayor, the newspaper’s job was to do what he told us to do, and we didn’t do that.”

But even as tensions boiled over and the local governments in Marion and Clarksdale tried to throw sand in the gears of accountability, Emmerich and Meyer kept their papers’ presses rolling.

“It was two all-nighters to put out the paper because we lost everything,” Meyer said. “They took our backup drives. We didn’t even have our name plates.”

Emmerich said stunting a local paper like his, either in court through publishing gags or through other means, could decimate the community’s access to reliable information. Similarly, Meyer said he sees his paper as a challenger to assumption and an excavator of truth — not a placater to the public or the local government.

“We need to understand that there is a role for journalism in society, and that role is not necessarily being the cheerleader for the town,” he said. “We are here to present the views that aren't heard, to explore the facts that aren't explored.”

It’s been over a year since the police chief who led the raid on the Marion County Record resigned, but the fallout hasn’t ceased. Meyer said he is “keeping the lawyers busy” by suing the county, the city, the former police chief, and other individuals involved in the raid.

“We got so many subscriptions out of this. We’re the 121st largest town in Kansas, the 57th largest county. A year after the raid, we had the eighth largest paid circulation in the state.”

Eric Meyer, Marion County Record publisher

Meyer also plans on filing wrongful death suits. His 98-year-old mother, Joan Meyer, died a day after police executed a search warrant at the home they shared. Her death, he believes, was caused by the stress of the raid.

By standing up to intimidation that flew in the face of the journalism their papers produced, Emmerich and Meyer both experienced an outpouring of support thanks to the nationwide attention their cases received.

“We got so many subscriptions out of this. We’re the 121st largest town in Kansas, the 57th largest county,” Meyer said. “A year after the raid, we had the eighth largest paid circulation in the state.” Marion is a town of less than 2,000 residents.

Keeping a small town newspaper’s finances in check is essential, especially at a time when one-third of U.S. newspapers have shuttered since 2005. But Meyer and Emmerich agree that success isn’t just measured in dollar signs or subscriber rates. Their papers must hold power to account in order to fulfill their mandates.

“Because there's so little good local journalism, the good local journalism that is there tends to be very powerful and gets results,” Emmerich said. “And unfortunately, one of those results is pushback from the city council in the form of intimidation tactics and such.”

Despite being lifted, the publishing gag against The Clarksdale Press Register “did hurt us,” Emmerich said, but “we weathered that storm.” The paper is still vulnerable, however, because Mississippi is one of several states that lacks an anti-SLAPP law protecting journalists from legal actions known as strategic lawsuits against public participation that are brought in order to chill speech.

Still, both Emmerich and Meyer believe the risks they are taking to report the truth and hold officials accountable outweigh the consequences of playing it safe. After all, a public that is disengaged from its reality “sure as hell hurts democracy,” Meyer said. And in a country that routinely distrusts and villainizes local news, these attacks did not occur in a vacuum; if they can happen in Clarksdale or Marion, they can happen anywhere.

“People don’t think they can change things. I've written the same editorial probably 50 out of the 52 weeks in the year, just with different ways of expressing it,” Meyer said. “If you don't believe that you can make a difference in something, all you listen to are slogans. If you believe you can make a difference, you'll look at facts.”

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freedom.press/issues/local-new…