Official Mcps Are at Risk to Willison's Lethal Trifecta Attack
Posted4 months ago
tramlines.ioTechstory
skepticalnegative
Debate
10/100
CybersecurityVulnerabilityMcps
Key topics
Cybersecurity
Vulnerability
Mcps
A blog post claims that MCPS are at risk to a specific cyber attack, but the discussion is limited.
Snapshot generated from the HN discussion
Discussion Activity
Light discussionFirst comment
N/A
Peak period
1
Start
Avg / period
1
Key moments
- 01Story posted
Sep 16, 2025 at 1:27 PM EDT
4 months ago
Step 01 - 02First comment
Sep 16, 2025 at 1:27 PM EDT
0s after posting
Step 02 - 03Peak activity
1 comments in Start
Hottest window of the conversation
Step 03 - 04Latest activity
Sep 16, 2025 at 1:27 PM EDT
4 months ago
Step 04
Generating AI Summary...
Analyzing up to 500 comments to identify key contributors and discussion patterns
Discussion (1 comments)
Showing 1 comments
coderinsanAuthor
4 months ago
Hey HN we’ve been collecting lethal trifecta based attack scenarios on official MCPs and implementing guardrails against them for a while now. It's incredible to see how many of the official MCPs are susceptible to these attacks. With ChatGPT’s integrated MCP support lethal trifecta attacks have become much more relevant.
View full discussion on Hacker News
ID: 45265168Type: storyLast synced: 11/17/2025, 2:07:58 PM
Want the full context?
Jump to the original sources
Read the primary article or dive into the live Hacker News thread when you're ready.