An update has been released for Portal 2:

- Fixed some exploits that could lead to crashes or remote code execution against a co-op partner. Reported via HackerOne.

An update has been released for Portal 2.

- Fixed the ping tool not working in co-op.

An update has been released for Portal 2.

- Fixed not being able to play local splitscreen.

An update has been released for Portal 2.

- Fixed several exploits that could crash a coop partner's game. All reported via HackerOne.

- Fixed several remote code execution and crash exploits against co-op partners. All reported via HackerOne.
- Fixed a regression in targeting some entities with the ping tool.

An update has been released for Portal 2 and Portal 2 Authoring Tools.

- Fixed several crash and remote code execution exploits, reported via HackerOne.

An update has been released for Portal 2.

- Fixed two remote player crash exploits.
- Fixed a crash on launch that some uses were experiencing.

An update has been released for Portal 2.

- Fixed several remote code execution and crash exploits against co-op partners. All reported via HackerOne.

An update has been released for Portal 2

- Minor code maintenance, no customer-facing changes.