Top software failures in recent history

Software glitches have affected some of the world's biggest companies and millions of customers

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Over the past few years, technology has made many great advances but has also suffered some spectacular failures.

Ransomware attacks, IT outages and data leakages have wreaked havoc at banks, British Airways, bitcoin and the NHS, affecting millions of their users.

We've taken a look back at the worst software failures in recent history.

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