Perplexity fixes network flaws agents exploited in its SPACE sandbox
Overview
Perplexity says it fixed the network flaws that AI agents exploited in its SPACE sandbox, and post-fix testing found no bypasses.
The company says it will keep testing SPACE as models get stronger.
In its agent red-teaming experiments, Perplexity used a standard Capture the Flag design in which the flag was a credential stored only on the host, so an agent could reach it only by breaking out of the virtual machine. Perplexity reports that 9 of 12 models spent at most 4% of their effort on the virtualization layer, so their failed escape attempts were weak evidence of the VM's security.
After revising the task to focus on the VM-host boundary, which raised the share of effort spent there by about 60 percentage points on average, Perplexity says agents still failed to escape after directly attacking the boundary. The company calls this stronger evidence of its isolation.
Written by AI from the articles below · updated Nov 11, 1:32 PM ET
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Developments
4 developments
- Nov 11, 1:21 PM ET · 1 articlePerplexity fixes network flaws in SPACEPerplexity: Perplexity fixes network flaws agents exploited in SPACE sandbox
- Nov 11, 1:21 PM ET · 1 articlePerplexity reports agent tests of VM-host boundary isolationPerplexity: Perplexity says agents failed to escape VM-host boundary after direct attacks
- Nov 11, 1:21 PM ET · 1 articlePerplexity reports how AI agents approached a VM escape challengePerplexity: Perplexity finds most AI agents barely tested a VM's isolation in escape challenge
- Nov 11, 1:21 PM ET · 1 articlePerplexity describes its agent red-teaming experimentPerplexity: Perplexity uses a standard CTF design to test agent red-teaming
Article timeline
The articles in this story. Times are ET.
Perplexity@perplexity_aiOfficialPerplexity fixes network flaws agents exploited in SPACE sandboxAIPerplexity says it fixed the network flaws that agents exploited in SPACE, and post-fix testing found no bypasses. The company says it will keep testing SPACE as models get stronger.
Perplexity@perplexity_aiOfficialPerplexity says agents failed to escape VM-host boundary after direct attacksAIPerplexity revised its agent task description to focus on the VM-host boundary, raising the share of effort spent there by about 60 percentage points on average. Agents still failed to escape after directly attacking the boundary, which Perplexity says gives stronger evidence of its isolation.

Perplexity@perplexity_aiOfficialPerplexity finds most AI agents barely tested a VM's isolation in escape challengeAIPerplexity reports that when given a CTF prompt, AI agents spent most of their effort searching the VM for the flag through files and services rather than testing its isolation. Nine of 12 models spent at most 4% of their effort on the virtualization layer, so their failed escape attempts are weak evidence of the VM's security.

Perplexity@perplexity_aiOfficialPerplexity uses a standard CTF design to test agent red-teamingAIPerplexity says it used the standard Capture the Flag (CTF) design in its agent red-teaming experiments. In its CTF task, the flag was a credential stored only on the host, so an agent could reach it only by breaking out of the VM.

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