centrum.sk
apt73 listed this organization on its leak site on Apr 27, 2026.
- Listing date
- Apr 27, 2026
- Attack date
- Apr 27, 2026
Listing text
Centrum.sk (centrum.sk ) is an online portal in Slovakia that provides an email service, news and...
About the group
apt73 posted its first listing on Apr 22, 2024 and has listed 157 organizations to date.
A new ransomware group is said to have emerged in mid-April 2024, under the name 'APT73.' It's worth noting that the group reportedly self-proclaimed as an APT, which stands for 'Advanced Persistent Threat' in the cybersecurity field. According to research, much of the available information about the aforementioned group came from another ransomware group known as LockBit.
Learning center
What does this listing mean?
Ransomware groups move data out of the organization before encrypting systems and threaten to publish it if the ransom is not paid. This method is called double extortion.
The listing shows that the group claims to have targeted the organization. Whether the data was published is shown by the later status of the listing.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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