Lithuanian authorities knew about the data theft from at least April but informed the public only at the end of May.

Omissions

• The claim uses 'Lithuanian authorities' broadly; the entity that first knew was the Centre of Registers (a state enterprise), whose former director Adrijus Jusas confirmed detection in early April. It is unclear when other branches of government (e.g., the Prosecutor General's Office, the Ministry of Interior) were formally notified, though the Centre of Registers is indeed a Lithuanian state institution.
• The exact date in early April when the breach was detected has not been publicly specified — only described as 'early April' by the former director of the Centre of Registers.
• No primary official source (e.g., an official press release from the Centre of Registers or the Prosecutor General's Office with exact dates) was found; all information comes from secondary journalistic sources reporting on official statements.

Sources

• SecondaryThe Record MediaThe breach was first detected in early April, according to Centre of Registers chief Adrijus Jusas, though authorities delayed public disclosure until just a day before the story broke in the press.
• SecondaryDelfi.ltFormer Centre of Registers director Adrijus Jusas said Monday the large-scale data leak had been detected in early April, but public disclosure was delayed.
• SecondaryEuronewsLithuanian authorities are on high alert for cyber attacks after a massive data leak involving more than 600,000 entries from national data registries. Published 25 May 2026, marking the public disclosure window.
• SecondaryInfoerdve.ltThe State Data Protection Inspectorate said on Friday, 22 May 2026, that it had opened an investigation into the Registrų centras data leak.