Massive Facebook Phishing Operation Leverages AppSheet, Netlify, and Telegram

Gbhackers •Divya • May 2, 2026

Cybersecurity researchers at Guardio Labs have uncovered a massive phishing operation dubbed AccountDumpling that has compromised more than 30,000 accounts worldwide. Unlike conventional phishing campaigns that rely on spoofed domains or compromised SMTP servers, this Vietnamese-linked operation abuses Google AppSheet to deliver fully authenticated malicious emails. Because the messages originate from legitimate Google infrastructure, […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

30,000 Facebook Accounts Compromised in Google AppSheet Phishing Scheme A Vietnamese-linked cyber operation, codenamed AccountDumpling, has compromised around 30,000 Facebook accounts through a sophisticated phishing campaign. The attackers exploited Google AppSheet to send fully authenticated phishing emails, bypassing traditional email security measures. This method allowed them to harvest user credentials and identity documents effectively. The stolen accounts are being sold on an illicit marketplace operated by the threat actors. Guardio Labs discovered this operation, highlighting its global impact. The campaign also utilizes platforms like Netlify and Telegram to enhance its reach and effectiveness. Currently, there are no specific patches or CVEs mentioned to mitigate this threat. Organizations are advised to enhance their email security protocols and user education to combat such phishing attempts. 13 sources 68

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Massive Facebook Phishing Operation Leverages AppSheet, Netlify, and Telegram

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Extracted Entities

Attack Types (1)

Campaigns (1)

MITRE ATT&CK (1)

Platforms (3)