A bug is an error or mistake in software coding or hardware design. A bug represents a flaw or vulnerability in a system that can be used by attackers as a point of compromise.

One example is when hackers found a bug that allowed them to access personal data on any T-Mobile customer. The bug exposed email addresses, billing account numbers, and IMSI numbers (a unique, standardized number that identifies subscribers).This allowed hackers to impersonate the victim with T-Mobile’s customer support staff, ask for a new SIM card number, and hijack their phone numbers.

Continue Reading: SIM Pin Bug

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Secure Sockets Layer (SSL)