A trio of Am Law 200 firms have landed lead roles on the latest noteworthy deal in the expanding cybersecurity sector.

The Blackstone Group announced Tuesday that it has agreed to buy an 80 percent stake in Denver-based information security company Accuvant from private equity rival Sverica International. While terms of the deal were not disclosed, various new reports pegged its value at about $225 million, including debt financing. Blackstone’s equity portion of the acquisition is worth roughly $150 million.