PromptArmor company blog

ChatGPT for Google Sheets exfiltrates workbooks

by PromptArmor Threat Intelligence Team promptarmor.com published 2026-06-03

ChatGPT for Google Sheets is vulnerable to data exfiltration and phishing overlay attacks that affect workbooks across the victim’s account after an indirect prompt injection in a single sheet.

Points

324

HN comments

121

Submissions

1

Cited by

0 commenters

AI & Machine LearningSecurity & Privacy2026

Related posts from the same era

Statement on US government directive to suspend access to Fable 5 and Mythos 5

Anthropic20263,158 points2,314 commentscited by 11 details

Astra can read and write weights to improve Qwen

RRikiya Takehi20262,959 points899 comments details

HackerTube: YouTube built from videos recommended by HN

karpathy20262,887 points641 comments details

Claude Fable 5

Anthropic20262,626 points2,159 commentscited by 10 details

Claude Code is steganographically marking requests

Thereallo20262,445 points750 commentscited by 3 details

My AI skeptic friends are all nuts

Fly.io Blog20252,356 points2,826 commentscited by 13 details