Alex Lisle
Chief Technology Officer of Reality Defender, hired in 2025 to succeed co-founder Ali Shahriyari in that role.
Alex Lisle (Alexander Lisle) joined Reality Defender as CTO in July 2025, succeeding co-founder Ali Shahriyari. He has 25+ years in cybersecurity: an engineer at Fortify Software, Chief Software Architect at AlienVault (where he designed the USM Anywhere SaaS threat-detection platform), CTO at Kryptowire (later Quokka) following AlienVault's acquisition by AT&T, CTO at Hubble Technology (a CAASM/agentless-asset-visibility platform later acquired by NetSPI), and most recently Incubation Engineering Lead at SecurityScorecard. He holds several cybersecurity patents co-invented with former AlienVault colleagues Jaime Blasco and Russell Spitler, and advises the AI-security startup Knostic.
Overview
- Role
- Chief Technology Officer, Reality Defender
- Based in
- Prior experience
- Fortify Software (engineer), AlienVault (Chief Software Architect), Kryptowire/Quokka (CTO), Hubble Technology (CTO), SecurityScorecard (Incubation Engineering Lead)
- www.linkedin.com/in/alexlisle/
Affiliated funds0
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Frequently asked
- Who is Alex Lisle?
- Alex Lisle (Alexander Lisle) joined Reality Defender as CTO in July 2025, succeeding co-founder Ali Shahriyari. He has 25+ years in cybersecurity: an engineer at Fortify Software, Chief Software Architect at AlienVault (where he designed the USM Anywhere SaaS threat-detection platform), CTO at Kryptowire (later Quokka) following AlienVault's acquisition by AT&T, CTO at Hubble Technology (a CAASM/agentless-asset-visibility platform later acquired by NetSPI), and most recently Incubation Engineering Lead at SecurityScorecard. He holds several cybersecurity patents co-invented with former AlienVault colleagues Jaime Blasco and Russell Spitler, and advises the AI-security startup Knostic.
- What is Alex Lisle's role?
- Alex Lisle is Chief Technology Officer, Reality Defender.
- Where did Alex Lisle work before?
- Alex Lisle's prior roles include Fortify Software (engineer), AlienVault (Chief Software Architect), Kryptowire/Quokka (CTO), Hubble Technology (CTO), SecurityScorecard (Incubation Engineering Lead).
Sources & citations5
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
Reality Defender Names Alex Lisle as Chief Technology Officer to Scale Deepfake Detection Globally
PR Newswire: Reality Defender Names Alex Lisle as Chief Technology Officer to Scale Deepfake Detection GloballyVerified2025-07-24 - 2
Alex Lisle team bio: Fortify Software, AlienVault Chief Software Architect, career history
Reality Defender: Alex Lisle - TeamVerified2026-08-10 - 3
Kryptowire Appoints Alexander Lisle as Chief Technology Officer
BusinessWire: Kryptowire Appoints Alexander Lisle as Chief Technology OfficerVerified2020-08-11 - 4
Hubble Technology Appoints Alex Lisle CTO
citybiz: Hubble Technology Appoints Alex Lisle CTOVerified2026-08-10 - 5
Alex Lisle - Chief Technology Officer at Quokka (formerly Kryptowire)
The Org: Alex Lisle - Chief Technology Officer at QuokkaVerified2026-08-10