In 2008, Jonathan presented the first public vulnerability affecting full disk encryption software Microsoft Bitlocker.[6] at Defcon. His generic exploit also affected other full disk encryption software such as Truecrypt,[7] and BIOS firmware from Intel.[8][9]
Hardware backdooring
In 2012, Jonathan presented a Proof of Concept BIOS and PCI firmware malware.[10] named Rakshasa,[11] the first known[12] example of a permanent Hardware backdoor at Defcon and Blackhat.[2][3][13] The attack consisted in the inclusion of a Bootkit in firmware[14] either from the BIOS or Network cards.[15]
Jonathan is the main author of the Witchcraft Compiler Collection, a reverse engineering framework presented at major conferences including Defcon, Blackhat and USENIX.[20] This framework allowing to transform an ELF binary into a shared library is available on Linux distributions such as Debian, Ubuntu or the Kali Linux distribution.[21]
Other notable research
Jonathan served as a security expert for major media outlets, for instance in the XKeyscore program[22][23] disclosed by Edward Snowden, mass surveillance programs,[24] when the NSA allegedly hacked French President Nicolas Sarkozy's emails,[25] or warning the industry about car hacking[26][27] as early as 2012.
Security hacking activities
In 2014 Jonathan was the main cybersecurity consultant to the Watch Dogs by Ubisoft, presenting the game to an international press audience in Chicago, with global coverage including Australia,[26] Deutschland,[28] France[29][30] or Spain.[31] In 2016, Jonathan was also the main consultant for the second opus of the franchise Watch Dogs 2 and presented it to the international press.[32][33]
In 2012, Jonathan, along with other top security researchers including Chris Valasek, Matt Suiche and Jon Oberheide submitted a bogus, computer-generated article[34] on Nmap to the Hakin9 security magazine, as a way to protest against the constant spamming of top researchers by the magazine.[35] While the stunt was praised by hackers, the response of Hakin9, legally threatening fellow Nmap author Gordon Lyon was so terrible that it earned the Pwnie Awards for most epic fail in 2013.
Conference host
Jonathan is the co-founder of international cybersecurity conferences Hackito Ergo Sum[36][37] and NoSuchCon.[38][39][29] He also sits on the review boards of the Shakacon (Honolulu, USA)[40] and Nullcon (Goa, India)[41] conferences.