Silent Librarian G0122
Also known as TA407, COBALT DICKENS.
Silent Librarian is a group that has targeted research and proprietary data at universities, government agencies, and private sector companies worldwide since at least 2013. Members of Silent Librarian are known to have been affiliated with the Iran-based Mabna Institute which has conducted cyber intrusions at the behest of the government of Iran, specifically the Islamic Revolutionary Guard Corps (IRGC).
Documented targeting: Government, Education & Research
Methodology
Relevance is a match on your industry sector and technology stack against the MITRE ATT&CK v19.1 group graph (174 groups, 821 software families, 56 campaigns). It is computed deterministically from that data, with no language model in the request path. It is a relevance match, not threat-intelligence probability data: it tells you which documented actors and techniques are worth emulating for an org like yours, not a forecast that any specific group will act.
TurboPentest can autonomously exercise 2 of 13 of this actor's documented techniques today (15%). 6 are out of scope for automated testing (social engineering, denial of service, physical).
+3 coming soonmore unlock with our internal pentesting agent, currently in private beta.
These counts are computed from the vendored MITRE ATT&CK graph and the published coverage map, and are reproducible from source.
In-scope techniques to emphasize
Emulate Silent Librarian. Audit-Ready pentest, $99.
Finds nothing? Your next pentest is free. If a pentest surfaces zero actionable findings, we credit you a free re-pentest. Once per target; does not apply to retests or Recon. You always walk away with real findings or a free redo.
Launch this pentestFrequently asked questions
Who is Silent Librarian (G0122)?
Silent Librarian is a group that has targeted research and proprietary data at universities, government agencies, and private sector companies worldwide since at least 2013. Members of Silent Librarian are known to have been affiliated with the Iran-based Mabna Institute which has conducted cyber intrusions at the behest of the government of Iran, specifically the Islamic Revolutionary Guard Corps (IRGC).
What sectors does Silent Librarian target?
Based on MITRE ATT&CK, Silent Librarian has been observed targeting Government, Education & Research.
Can TurboPentest test for Silent Librarian?
TurboPentest can autonomously exercise 2 of 13 of this actor's documented techniques today. 3 more need internal or assumed-breach access (the Adversarial-Depth tier), and the rest are out of scope for automated testing.
What does it cost to emulate Silent Librarian?
An Audit-Ready pentest starts at $99 per target. If it surfaces zero actionable findings, your next pentest is free.
Reviewed by
Michel Chamberland, Founder & CEO of IntegSec. CISSP, OSCP, OSCE, with 20+ years in offensive security, alumni of IBM X-Force Red and Trustwave SpiderLabs.
Last reviewed July 30, 2026.