Base64 is a simple encoding scheme that represents binary data as ASCII text.
Overview
Base64 is a simple encoding scheme that represents binary data as ASCII text. In cybersecurity, it is commonly used to obfuscate phishing payloads, malicious links, or commands to evade basic detection filters, though the data can be decoded by recipients or security tools. Its ubiquity in attacks makes it a notable technique for credential theft, malware delivery, and data exfiltration.
Related Threat Clusters
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Megalodon Campaign Infects Over 5,500 GitHub Repositories with Malware
On May 18, 2026, an automated cyber campaign named Megalodon pushed 5,718 malicious commits to 5,561 GitHub repositories within six hours. The attackers used forged identities and dummy accounts to inject malicious…
7 articles · Updated May 26, 2026 -
AI-Driven Command Injection Vulnerability Exposes Snowflake Jira Credentials
A critical command injection vulnerability was discovered in Snowflake's GitHub Actions workflow, allowing unauthenticated attackers to execute arbitrary commands. The flaw was introduced by an AI coding assistant,…
8 articles · Updated August 17, 2026 -
Prompt Injection Vulnerability in GitHub Actions AI Agents Exposes Secrets
Security researchers discovered a critical vulnerability in three AI agents integrated with GitHub Actions: Anthropic's Claude Code Security Review, Google's Gemini CLI Action, and Microsoft's GitHub Copilot. The…
12 articles · Updated April 15, 2026 -
Humans Miss One-Third of Malicious AI Command Requests in Testing Game
A browser-based game tested human ability to approve AI coding agent requests, revealing that players missed approximately one in three malicious commands. The game simulated 40,000 runs with 409,000 decisions, showing…
2 articles · Updated August 6, 2026 -
Polymarket Users Lose $500,000 in Phishing Attack
Polymarket has experienced a significant phishing attack that has resulted in users losing over $500,000. The attack exploited vulnerabilities within the platform's section, affecting individual investors and…
2 articles · Updated November 11, 2025 -
Polymarket Faces Security Breach Amid Phishing Attack
Polymarket has experienced a significant security breach due to a phishing attack, resulting in users losing over $500,000. The attack has raised alarms among traders, particularly as the platform prepares to re-enter…
2 articles · Updated November 11, 2025
Recent Intelligence Reports
- Critical Command Injection Vulnerability in Snowflake snowflake-connector-net GitHub ... — Rescana · August 18, 2026
- Ai Agent Permissions — scalex.dev · August 7, 2026
- Megalodon Mass Github Repo Backdooring Ci Workflows — safedep.io · May 26, 2026
- Comment And Control Prompt Injection Credential Theft Claude Code Gemini Cli Github Copilot — oddguan.com · April 15, 2026
- Polymarket users sound alarm over phishing links in private markets — Cryptorank · November 11, 2025