ESentire Inc., a cyber-security company backed by private equity firm Warburg Pincus, has struck a deal to sell a stake to two investment firms at a $1.2 billion valuation, according to people familiar with the matter.

ESentire, based in Waterloo, Ontario, helps companies detect security threats and then respond to them. It competes with larger rival Mandiant Inc., which Bloomberg News previously reported is in talks to be acquired by Microsoft Corp.

CDPQ, which manages Quebec’s public retirement and insurance funds, has net assets of about C$390 billion ($307 billion). In December, it said it had agreed to buy a minority stake in supply chain compliance provider QIMA.

Read more: Insurance Journal