Why Developer Machines Are Prime Targets for Credential Harvesting Attacks

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Credential harvesting involves the large-scale collection of login credentials — including passwords, API keys, and session tokens — which attackers use or sell on the dark web. According to Verizon's 2026 Data Breach Investigations Report, credential abuse appears in 39% of breaches when the full attack chain is traced. Developer machines are particularly vulnerable because sensitive credentials often sit in plaintext on disk, stored in config files, shell histories, SSH keys, and AI tool caches. Unlike phishing, attackers targeting developer machines do not need to trick anyone — the credentials are already accessible once a machine is compromised. Modern techniques such as adversary-in-the-middle phishing kits and device code phishing further allow attackers to bypass multi-factor authentication by capturing session cookies rather than passwords directly.

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