Topnet: more than 5,000 accounts and database claimed hacked

<p>On 11 September 2025, a forum user published to offer for sale data belonging to <strong>Topnet (Tunisia)</strong>, Tunisia on a hacking forum. The claimed dataset contains approximately <strong>5,000</strong> records. A limited sample was published to support the claim.</p> <h2>What the source reveals</h2> <p>An actor using the name Hider_Nex claims to have hacked Topnet, the leading internet service provider in Tunisia, and offers more than 5,000 accounts and the full database for sale.</p> <h2>Risks</h2> <ul> <li>SIM swap fraud using subscriber identity data to bypass two-factor authentication on banking and messaging accounts</li> <li>Account takeover of mobile money, digital wallets, and value-added services linked to subscriber accounts</li> <li>Call interception and location tracking if call detail records or network signalling data were exposed</li> <li>Unauthorised access to sensitive organisational data that could be used for follow-on attacks</li> <li>Competitive intelligence loss if proprietary business information or trade secrets were exposed</li> <li>Reputational damage and erosion of customer, citizen, or stakeholder trust in the affected organisation</li> <li>Legal liability and regulatory fines under applicable data protection frameworks</li> </ul> <h2>What remains unknown</h2> <ul> <li>the total volume of data compromised and whether it includes additional categories beyond those disclosed</li> <li>the method by which the data was obtained - whether through a direct database compromise, an insecure API, or a third-party breach</li> <li>whether the data has been sold or distributed to additional parties beyond the forum post</li> </ul> <h2>Conclusion</h2> <p>This incident confirms that Topnet (Tunisia)'s data has been compromised and is circulating on underground forums. Organisations in the telecom sector should treat this incident as a reminder to audit access controls, monitor for anomalous data exfiltration, and ensure incident response plans address data publication scenarios. Affected individuals should change passwords and remain vigilant against phishing attempts.</p>