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Cyber Threat
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Ransomware victim Technology

Taldor

Listed by Nasirsecurity on · organisation based in Israel

Disclosed
Oct 12, 2025
Leak-site listing date
Threat group
Nasirsecurity
6 victims listed
Country
Israel
#23 most targeted
Sector
Technology

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Nasirsecurity. Figures and technique mappings are quoted from the source data, not inferred.

About the Nasirsecurity group

Nasir Security is a pro-Iranian threat actor that emerged around October 2025, primarily targeting energy sector organizations in the Middle East (UAE, Oman, Saudi Arabia, Iraq) and Israeli IT supply chain firms, using spear-phishing, BEC, and exploitation of public-facing applications.

Incident analysis

Taldor was listed by Nasirsecurity ransomware, a group with 6 victims recorded in this database. The listing appeared on the group's leak site on October 12, 2025.

Taldor is based in Israel and operates in the Technology sector. Israel ranks #23 worldwide for ransomware disclosures, with 147 victims in this database.

Sector context. Technology companies hold intellectual property, customer data, and source code — all highly valuable assets. A successful ransomware attack can also put downstream customers at risk through supply chain exposure.

Nasirsecurity typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was Taldor attacked by ransomware?

Yes. Taldor was listed as a victim of the Nasirsecurity ransomware group on October 12, 2025. The organisation is based in Israel and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Taldor?

Taldor was attacked by Nasirsecurity ransomware. Nasirsecurity is one of the most active ransomware groups, having claimed 6 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Taldor ransomware attack occur?

The ransomware attack on Taldor was disclosed on October 12, 2025. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the Taldor ransomware attack?

The specific data stolen from Taldor has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Technology organisation, Taldor likely held source code, intellectual property, and customer data.

How can organisations protect against Nasirsecurity attacks?

To defend against Nasirsecurity and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.