signiflow.com Listed by lockbit3 Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

When a company that handles digital signatures and legally binding documents appears on a ransomware group's leak site, the practical stakes fall on clients, partners and anyone whose contracts or approvals may have been stored in its systems. On 7 December 2023, signiflow.com was listed by the LockBit3 ransomware group, which claimed to have exfiltrated internal files. The number of people affected remains unknown, and public detail about the precise scope is limited, yet the nature of the business means any exposure of client files or contracts could create lasting identity, legal and financial risk for those involved.

This article sets out only what has been reported, places the claim in context, and outlines the concrete steps people can take while fuller confirmation is still absent.

Breaking down the breach

According to the available record, signiflow.com was listed by the LockBit3 ransomware group on 7 December 2023. The group asserted that internal files had been exfiltrated in a ransomware attack. The listing itself is a claim made on the group's leak site; independent confirmation of the intrusion, the volume of data taken, or the exact method of access has not been publicly detailed in the material at hand.

No figure for the number of people affected has been released. The only data description supplied is that internal files were allegedly exfiltrated, with the group's own wording referring to files from clients and contracts. Timing beyond the 7 December 2023 report date, the duration of any unauthorized access, and whether systems were encrypted in addition to data theft all remain undisclosed. In short, the public picture is that of a claimed ransomware incident involving internal-file exfiltration, without further verified metrics.

Who is lockbit3?

LockBit3 is the name associated with a prolific ransomware-as-a-service operation that has been active for several years. The group typically gains access to corporate networks, steals data, and then encrypts systems, threatening to publish the stolen material unless a ransom is paid. Its leak site is used both to pressure victims and to advertise successful intrusions. LockBit affiliates have targeted organisations across many sectors worldwide; the model relies on double extortion—encryption plus the threat of data publication—so that even if backups allow recovery, the risk of exposure remains.

In this instance the group claims to hold files belonging to signiflow.com. No additional statements, screenshots or sample data beyond that general claim are recorded in the facts available here. As with other LockBit listings, the appearance of a victim name on the leak site should be treated as an unverified assertion until the organisation or independent investigators state the details.

About signiflow.com

SigniFlow, founded in 2013, provides digital-signature workflow software. Its platform is designed to digitise any process that requires a document to be legally signed or approved, using advanced electronic signatures. Organisations in legal, financial, healthcare, government and commercial sectors commonly rely on such tools to manage contracts, approvals, onboarding paperwork and other records that carry legal weight.

Because the service sits at the centre of document execution, it necessarily processes and stores sensitive materials—signed agreements, identity-related attachments, approval trails and client correspondence. A breach affecting a provider of this type is consequential precisely because the data are not merely internal operational files; they often contain the personal and commercial information of the provider's own customers and their counterparties.

What was likely exposed

The facts state that internal files were exfiltrated in a ransomware attack and that the group referred to files from clients and contracts. No exhaustive inventory of data types, file counts or specific record categories has been disclosed. Exact contents therefore remain unconfirmed.

Organisations that supply digital-signature and workflow platforms typically hold customer account details, uploaded documents awaiting signature, completed contracts, audit logs of who signed what and when, and sometimes supporting identity or contact information required for legal validity. It is reasonable to expect that material of this general character could have been among any exfiltrated files, yet it would be inaccurate to assert that any particular data element was definitively taken. Until SigniFlow or a competent authority publishes a confirmed list, the exposure must be described only in the broad terms already reported: internal files, including client files and contracts claimed by the attackers.

Why it matters

For individuals and organisations whose documents may have been stored on the platform, the core risks are straightforward. Contracts and signed records can contain names, addresses, financial terms, intellectual property and personal identifiers. If such material circulates, it can be used for targeted phishing, business-email compromise, identity fraud or competitive harm. Even without immediate misuse, the uncertainty itself creates compliance and notification burdens for any client company that relied on the service.

For SigniFlow, a claimed ransomware incident raises operational, reputational and regulatory questions. Customers may need to re-evaluate the integrity of documents executed through the platform, and the company may face contractual or legal obligations to investigate and notify. Because the number of people affected is unknown and the precise data set is unconfirmed, the full scale of downstream impact cannot yet be measured; the prudent assumption is that anyone who used the service for sensitive transactions should treat the possibility of exposure seriously until clearer information emerges.

Were you affected?

If you have used SigniFlow for contracts, approvals or other signed documents, monitor the accounts and email addresses associated with those transactions for unusual activity. Consider placing fraud alerts with credit agencies if personal identity documents were ever uploaded, and review any contracts that might now be in unauthorised hands for potential misuse. Preserve any notices you receive from SigniFlow or from your own organisation's security team.

You can also run a free exposure scan of your email address to check whether it has already appeared in known breach data sets. That step will not confirm or rule out involvement in this specific incident, but it provides a practical starting point for understanding your wider exposure while official details remain limited.

AICompiled with AI assistance from public sources and published under our editorial standards.