Big-ticket litigations involving scores of lawyers may be thinner on the ground these days, but a surge in global anti-corruption probes is helping to make up for it at a few firms.

This spring saw a number of significant enforcement actions and megasettlements under the Foreign Corrupt Practices Act, each requiring defendants to mobilize major legal muscle. Recent examples include Dutch telecom VimpelCom’s $795 million deal with U.S. and Dutch regulators to resolve conspiracy charges related to bribery of officials in Uzbekistan, and an ongoing probe of hedge fund Och-Ziff Capital Management Group’s link to a $100 million loan to Robert Mugabe and other Africa dealings.