Titanfall Exploit Investigation

A tweet from Respawn address reports of a security vulnerability in Titanfall, saying the developer was investigating. A follow-up tweet has reasurrances that this seems to be a "simple" security exploit rather than something that put players' hardware or personal information at risk:
An Update: We’re still investigating this issue but our engineers believe that we’re dealing with a simple exploit that can be used to crash games.

We do not believe there are any more serious risks to affected players or their machines.

We’ll update again as we learn more.