Internet Explorer vulnerability found in the scripting engine that handles objects in memory
Security flaw affects version 5 of the vBulletin forum software
Valve banned Kravets from its security notification programme after he was forced to go public on a rejected security flaw
The vulnerability was reported to Valve Software but was rejected for being 'out of scope'
Zero-day vulnerability uncovered by SandboxEscaper is a local privilege escalation flaw that hackers can exploit with 100 per cent success rate