BROADCASTS.com

Around a year ago, Andr\xe9 Tenreiro was called into a meeting between the chief technology officer of the phone carrier he worked for\u2014one of the largest in Mozambique\u2014and an executive of the country's largest bank. The latter had seen an escalating pattern of fraud based on so-called SIM swap attacks, where hackers trick or bribe a phone company employee into switching the SIM card associated with a victim's phone number.