Syscall Zero is a boutique offensive cyber consultancy. We develop capabilities in-house and source best-in-class tooling from a vetted network so our clients stay one step ahead of their adversaries. Coverage spans Mobile Device Exploitation, Lawful Interception, Red Teaming and adjacent disciplines. We work exclusively with sovereign government customers.
Adversary emulation conducted by our operators. Named-threat-actor profiles, MITRE ATT&CK mapping, full-spectrum operations against sovereign estates from initial access through actions-on-objective.
Read more →Vetted procurement and integration of third-party offensive capabilities on behalf of government buyers. Technical due diligence, contractual escrow and continuous end-use governance.
Read more →Every engagement follows the same six-stage cadence — whether we are developing a mobile capability, sourcing third-party tooling, building out a lawful interception system, or running a red team.
See the six stages →Six sanitised case files from a deeper backlog of sovereign engagements — mobile, LI, red team and sourcing. Client identities and technical detail are redacted.
Read case files →Sovereign government customers only. Four operating principles set the floor for whom we work with and how we behave on engagement.
See client profile →