Entity record
Tatiana Petrovna KOSTEROVAPerson
Tatiana Petrovna KOSTEROVA appears on the UK Sanctions List (UKSL), designated by UK Foreign, Commonwealth & Development Office (FCDO) under program The Russia (Sanctions) (EU Exit) Regulations 2019; reflected as observed on 2026-07-13.
Also known as
- DANILOVA
- Татьяна Петровна Костерова (Cyrl)
Designations
- Designated by UK Foreign, Commonwealth & Development Office (FCDO) under program The Russia (Sanctions) (EU Exit) Regulations 2019 since . Other entities under The Russia (Sanctions) (EU Exit) Regulations 2019
Reason for listing
Per UK Foreign, Commonwealth & Development Office (FCDO) (listed ):
UKSL RUS3690 — Measures: Asset freeze, Travel Ban, Trust Services Sanctions, Director Disqualification Sanction, Internet Services Sanctions: see "Other Information" — The Secretary of State considers that there are reasonable grounds to suspect that Tatiana Petrovna KOSTEROVA (hereafter KOSTEROVA) is an “involved person” under the Russia (Sanctions) (EU Exit) Regulations 2019 on the basis of the following ground: KOSTEROVA is and has been involved in destabilising Ukraine by providing support for action which undermines or threatens the territorial integrity, sovereignty or independence of Ukraine by acting as Foreign Language Resources Head in RYBAR LLC. (official source)
Deep-research findings
Factual findings gathered from public and official sources about this entity, each attributed to a verifiable source. These are composed facts, each traceable to the linked source — not a narrative we have written, and not a risk judgement or allegation by us. Read each source directly.
Roles & positions
UK FCDO's designation record (ref RUS3690, designated 13 Jul 2026) lists her position as ‘Foreign Language Resources Head at RYBAR LLC’, an alias ‘DANILOVA’, nationality Russian, and address in Moscow, Russia.
Associates
Named among 24 individuals and entities in the UK FCDO's 13 July 2026 press release ‘UK and EU strike Russian cyber networks with new sanctions’, which announced joint action against GRU Unit 29155 cyber operations and Rybar LLC media operations alongside GRU leadership Vyacheslav Stafeyev, Ivan Kasyanenko and Ivan Senin.
Key properties
- Nationality
- Russia
- Position
- Foreign Language Resources Head at RYBAR LLC
- Gender
- female
Identifiers
- UK Sanctions List Unique ID
- RUS3690
Addresses
Moscow, RussiaSource list & list version
| Source list | List version | Manifest SHA-256 | Status | Verify |
|---|---|---|---|---|
| UK Sanctions List (UKSL)Sanctions list UK Foreign, Commonwealth & Development Office (FCDO) | gb_fcdo_uksl@2026-08-04 | 6f5e8b8ed92cccf0… | List version (signing pending) | — |
About these sources
The UK Sanctions List (UKSL), published by the Foreign, Commonwealth & Development Office — since 28 January 2026 the single, current source for all UK sanctions designations (financial, immigration, trade and transport measures), superseding the older OFSI Consolidated List.
What a match means: A match is a current, binding UK sanctions designation — treat as a direct compliance hit and escalate immediately.
First observed ; last confirmed present in UK Sanctions List (UKSL) list version gb_fcdo_uksl@2026-08-04, observed .
This page reflects the official UK Sanctions List (UKSL), version gb_fcdo_uksl@2026-08-04, as observed on 2026-07-13. ProofAML is not the issuing authority.
Request a correction or dispute (distinguishes a data-handling error on our side from the underlying official designation, which is the issuing authority's record).
How to cite this page
Tatiana Petrovna KOSTEROVA. ProofAML. This page reflects the official UK Sanctions List (UKSL), version gb_fcdo_uksl@2026-08-04, as observed on 2026-07-13. ProofAML is not the issuing authority. URL: https://proofaml.com/people/tatiana-petrovna-kosterova-nk215903ef/
Machine-readable export (FTM + lineage): /data/entities/21.json (record key nk215903ef)