Computer scientists have now invented a way to hide secret messages in ordinary text by imperceptibly changing the shapes of letters. The new technique, named FontCode, works with common font families such as Times Roman and Helvetica. It is compatible with most word-processing software, including Microsoft Word, as well as image-editing and drawing programs, such… Read More


The EFAIL attacks exploit vulnerabilities in the OpenPGP and S/MIME standards to reveal the plaintext of encrypted emails. In a nutshell, EFAIL abuses active content of HTML emails, for example externally loaded images or styles, to exfiltrate plaintext through requested URLs. To create these exfiltration channels, the attacker first needs access to the encrypted emails,… Read More


In the debate over law enforcement access to encrypted devices, technical details matter. The rhetoric has been stark and, dismayingly often, divorced from technical reality. For example, two years ago we were told that only Apple could write software to open the phone of the San Bernardino terrorist; the technical reality turned out to be… Read More


To be effective, Clear wouldn’t be binding on just Apple but rather manufacturers of all computing devices, many of them low-cost products made by bootstrapped manufacturers. That means there would be dozens, hundreds, or probably thousands of PIN vaults mandated under Clear. And each of them would be a potential target for hackers all around… Read More


We’re pleased to announce that ACMEv2 and wildcard certificate support is live! With today’s new features we’re continuing to break down barriers for HTTPS adoption across the Web by making it even easier for every website to get and manage certificates. ACMEv2 is an updated version of our ACME protocol which has gone through the… Read More


Continuing on in our Encryption 101 series, where we gave a malware analyst’s primer on encryption and demonstrated encryption techniques using ShiOne ransomware, we now look at what it takes to break an encryption. In order for something as powerful as encryption to break, there needs to be some kind of secret flaw. That flaw is… Read More