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Warrantless wiretaps cut off for a week following US Congress vote

Lawmakers have failed to extend a surveillance law that allows US intelligence agencies to monitor targets abroad without a warrant.

Congress rejected a vote to extend Section 702 of the Foreign Intelligence Surveillance Act to July 2, which means, for a few days at least, some surveillance will be put on hold, for the first time since the Act was passed in 2008. The next possible chance for a vote will be June 28.

This has significance for CISOs because they need to be aware of how communication between the US and other countries is being monitored. The Act permits US intelligence agencies to collect texts and emails sent to and from foreigners living outside the US without a warrant — and when those communications are to or from an US citizen, it allows them to scoop them up too.

“For too long, the FBI has been able to piggyback on a major national security tool as an unconstitutional backdoor way of reading Americans’ communications,” Electronic Frontier Foundation Senior Policy Analyst Matthew Guariglia wrote in article about the renewal vote this week.

It is uncertain what will happen next. Some commentators expect things will proceed as if the Act had been extended, possibly through an executive order.  However, the industry may well revolt against this and we could see some tech providers take legal action.

This article first appeared on CSO.

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French government’s secure messaging system breached

An intruder has breached the French government’s encrypted messaging service, Tchap, showing once again that human error is a weak spot in any security system.

Tchap was developed in France as an example of national sovereignty and was designed to be a more secure option than WhatsApp for communication between government employees.

In this case, it wasn’t the technology that was at fault, but a user: The intruder gained access to the system by taking over their account, according to DINUM, the French government’s interministerial digital directorate.

DINUM said it has blocked the affected user’s access and is investigating how much information has been revealed. While the system’s encryption was not broken, the intruder would have been able to view unencrypted public chat rooms accessible to the account taken over, potentially affecting 73,467 of the system’s 825,000 users, DINUM said.

That matches at least part of a post on X (formerly Twitter) reporting the intruder’s claim to have accessed the account of a Tchap user in the education sector through social engineering, exposing 73,467 user accounts, 643,459 messages, 876 chat rooms with message history, and 59,386 media files totalling 13.51 GB, including references to documents marked “Diffusion Restreinte” (restricted distribution).

DINUM said that it had reminded all Tchap users that public chat rooms are accessible to any user and are not encrypted, so all participants should refrain from any sensitive or confidential information.

This article first appeared on CSO.

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Certifiably random: Swiss researchers claim perfect random number source

Researchers in Switzerland claim to have built a perfect random number generator from two quantum superconducting chips, a 30-meter-long pipe, and some software. The resulting device could be used to generate cryptographic keys, or to offer a “public randomness service” for lotteries or blockchain applications, they say.

They’re not the first to make the claim.

Many sources of randomness are biased. For example, coins or dice tend to favor one side. “Even modern random number generators, which are based on quantum mechanical effects like the reflection of photons from beam splitters, are not entirely immune to such a systematic error or ‘bias’,” said Andreas Wallraff, one of the leaders of the research team at ETH Zurich.

Similar biases can be found in purely software-based pseudo-random number generators. This has led to security problems in IoT devices and WhatsApp, among other applications.

To get around that, the researchers set up of two supercomputing chips, each representing one qubit, cooled to near absolute zero. The chips are connected by a 30-meter-long microwave guide, similarly cooled, and the microwave photons flying between them create a situation of quantum entanglement.

The results produced by this process are then transformed via a special algorithm to generate perfect randomness. “The resulting sequence of zeros and ones is now really perfectly random, and we can even certify that,” said Renato Renner, the other team leader. “The technical improvements allowed us to create random numbers that will remain perfectly random for all eternity.”

The team published their results this week in an article entitled “Experimental randomness amplification” in Nature.

This article first appeared on CSO.

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