How one line of code caused a $60 million loss 📉😓

Jan 30, 2024 · 4 min read · 60,000 people lost full phone service, half of AT&T’s network was down, and 500 airline flights were delayed On January 15th, 1990, AT&T’s New Jersey operations center detected a widespread system malfunction, shown by a plethora of red warnings on t...