Telefonica Breach: Infostealer Malware Opens Door for Social Engineering Tactics

Hudson Rock reports that Telefónica suffered a breach of its internal JIRA/ticketing platform after attackers used private infostealer malware (compromising hundreds of employee machines) combined with social engineering to escalate access; the compromise resulted in exfiltration of roughly 24,000 employee records, 500,000 JIRA issues/summaries, and 5,000 internal documents, and highlights widespread weak passwords and thousands of infected endpoints with corporate and third‑party credentials.