Lenders are charging more and adding stricter conditions to a $5 billion debt refinancing for Proofpoint, a cybersecurity company backed by Thoma Bravo, and the reason is artificial intelligence risk. A covenant, in plain terms, is a condition written into a loan agreement: a rule on how much more debt a company can carry, or how it can use its cash.

When lenders tighten those conditions, the borrower has less room to operate. Higher borrowing costs mean more cash leaving the business each year to service the debt. Both moves suggest lenders are treating AI risk as a real factor in what it costs Proofpoint to borrow.

The $5 billion refinancing is described as Proofpoint's latest debt deal.

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