Penetration Tester cover letter example
This example shows how a mid-level penetration tester can highlight concrete vulnerability metrics and developer collaboration. It suits applicants with several years of hands-on offensive security experience looking to target enterprise security roles.
Mid level example. The applicant, company and figures are invented. Write yours with your own real results.
October 14, 2026
Dear Arthur Pendelton,
During my current tenure at Apex Security Labs, I ran 34 penetration tests across cloud and on-premise infrastructure, finding 12 critical issues related to access control and misconfigurations. As SecureGrid Technologies expands its cloud infrastructure and enterprise client offerings, maintaining rigorous security postures across complex environments remains vital.
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Mention the exact number of tests run and critical findings uncovered to immediately establish technical credibility.
Show that you do not just drop reports and leave, but actively work with engineers to get findings closed within tight timeframes.
Name standard offensive tools like Burp Suite, Metasploit, and Nmap to prove hands-on proficiency.
Include experience drafting guides or reports that technical teams can actually use to patch vulnerabilities.
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Why this letter works, and opening lines by level
3 notes on what to copy and three opening lines for entry, mid and senior applicants.
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