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Third-Party Risk Management

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Cybersecurity Due Diligence

Cybersecurity Due Diligence: What Most Companies Skip

The $350 Million Oversight Nobody Saw Coming When Verizon acquired Yahoo in 2017, two previously undisclosed breaches affecting all 3 billion Yahoo accounts forced a $350 million price reduction. That's what happens when cybersecurity due diligence fails at the highest level. The breaches had already happened. The data

Carl B. Johnson May 25, 2026 5 min read
Cybersecurity Due Diligence

Cybersecurity Due Diligence: What Most Companies Miss

The $350 Million Typo in Verizon's Yahoo Deal When Verizon acquired Yahoo in 2017, the discovery of two massive data breaches — affecting all 3 billion Yahoo accounts — knocked $350 million off the purchase price. That's not a rounding error. That's what happens when cybersecurity

Carl B. Johnson May 12, 2026 5 min read