Short answer: Software updates matter because most of them include security patches that close weaknesses attackers already know about. Installing them promptly, ideally with automatic updates turned on, is one of the cheapest ways to keep your phone, laptop and accounts safe. Delaying them leaves a known, published gap open.

Verizon's 2026 Data Breach Investigations Report found that 31% of breaches now start with software vulnerabilities, overtaking stolen passwords as the top way attackers get in. Unpatched software is exactly the kind of gap an update closes.

Few things are more tempting to dismiss than an update prompt. It always seems to appear at the wrong moment — just before a meeting, halfway through a film, or when the battery is low. So we tap "remind me later", and later becomes next week.…