The issue:

• "the update would apply to "dual-boot systems that boot both Windows and Linux and should not affect these systems."
• But in fact... after update several users, reported that they were shown the following (lovely and generic) error: Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation'

The good intention:

The point:

The issue:

• This vulnerability allows attackers to execute arbitrary JavaScript in the victim's browser simply by having them view a malicious email.
• Attackers can 'easily' exploit these vulnerabilities, since no user interaction beyond opening the attacker's email is needed or just one click is required, making them particularly dangerous.
  WHY? vulnerabilities leading to the theft of emails, contacts, and passwords, as well as unauthorized email sending from the victim's account !

The issue:

The good: