KINWILDER

TA4903

No sourced public emblem in this profile.

reference profile · reported nexus: Unknown (not nationality)

TA4903 is a financially motivated threat actor known for conducting credential phishing and business email compromise campaigns. They target organizations in the U.S. across various sectors, spoofing government entities and private businesses. The actor has been observed using techniques such as QR codes in phishing campaigns and spoofing supplier domains to prompt victims to provide banking information. TA4903's activities typically involve stealing corporate credentials to facilitate follow-on BEC activities.

Source-reported aliases: . Associations do not prove equivalence.

Target geography

Catalog-listed countries (associations, not attack counts): No country-level metadata

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Historical casebook

No dated record curated yet; absence does not establish inactivity.

Planned Kinwilder coverage

Tentative editorial review windows, contingent on evidence and review; not promised publication dates or predictions of attacks.

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References

Pinned source catalog

https://www.proofpoint.com/us/blog/threat-insight/ta4903-actor-spoofs-us-government-small-businesses-phishing-bec-bids

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