Last week saw the greatest cyber attack in Internet history. 200.000 machines was reported infected by WannaCry a Ransomware taking advantage of a vulnerability in Windows OS. Both personal computers and bigger companies spread over 150 countries were affected by the massive cyberattack. Protect yourself against ransomware - to do list: 1. Update all systems 2. Backup all data 3. Install a dedicated ransomware blocker ex. Cybereason Ransomfree 4. Block TCP port 445 5. Never open email attachments from users whom you don't trust. 6. Don't visit links with doubtful content.