Thank you for reading the LinuxSecurity.com weekly security newsletter. The purpose of this document is to provide our readers with a quick summary of each week's most relevant Linux security headlines.

Guardian Digital Celebrates 20 Years of Revolutionizing Digital Security, Securing Email with Open Source - Pioneers of business email security for the past 20 years, Guardian Digital draws on the merits of Open Source coupled with expert engineering and unparalleled customer support.

Press Release: Guardian Digital Leverages the Power of Open Source to Combat Evolving Email Security Threats - Cloud-based email security solution utilizes the open source methodology for securing business email, recognized by many as the best approach to the problem of maintaining security in the relentlessly dynamic environment of the Internet.

  Netflix fixes potentially devastating Linux SACK vulnerability (Jun 18)
 

Eagle-eyed researchers from streaming titan Netflix have uncovered several troubling security vulnerabilities within the TCP implementations on Linux and FreeBSD kernels. The most severe specimen, called SACK Panic, could permit an attacker to remotely induce a kernel panic within recent Linux operating systems.
  EU says Russia conducted 'sustained' election interference campaign (Jun 16)
 

The European Union already suspected that Russia was trying to disrupt its parliamentary elections through hacks and other online interference, and now it's directly pointing a finger at the country. EU officials have published a report accusing Russia of orchestrating a "continued and sustained" misinformation campaign during the late May election similar to ones the country tried in the US, France and other countries. It used fake stories to "promote extreme views," stoke political tensions and, sometimes, discourage voter turnout.
  The world’s best supercomputers are being updated to run AI software faster (Jun 18)
 

The International Supercomputing Conference (ISC) kicked off in Frankfurt yesterday with the release of the latest list of the 500 most powerful supercomputers in the world. US machines still top the ranking, but China has the most computers on the list (219 versus 116 for the US).
  Embracing open source could be a big competitive advantage for businesses (Jun 17)
 

As companies chase the transformational technologies that will deliver exponential returns, they should turn their attention from the what to the how. One type of software underpins many of the most exciting, cutting-edge innovations today, including AI, cloud, blockchain, and quantum computing: open source.
  Report reveals Russian Hackers May Be Responsible for $530 Million Cryptocurrency Hack (Jun 18)
 

A new report of the investigation into the $530 million hack that ruined Japanese cryptocurrency exchange Coincheck in January 2018 states that Russian, not North Korean, actors may have been behind the attack.
  Five reasons “hacking back” is a recipe for cybersecurity chaos (Jun 21)
 

Sometimes when tech policymakers try to solve a problem, their proposed cure would only make matters much worse. Thats certainly the case with draft US legislation that would give victims of cyberattacks the chance to hunt their suspected attackers down.