Ron Arestia
Senior security researcher in Microsoft's DART Incident Response organization and a specialist in Active Directory Certificate Services and PKI, with extensive experience in enterprise security and assessments.
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Feb 11, 2026 • 44min
Securing Active Directory Certificate Services with Ron Arestia
Ron Arestia, a senior security researcher specializing in ADCS and PKI at Microsoft DART. He discusses how neglected ADCS setups enable lateral attacks. He explains PKI tiers, offline root importance, revocation and CRL practices. He compares running enterprise PKI versus cloud options and outlines common misconfigurations attackers exploit.
