This is very similar to the campaign I'm running right now.
Some suggestions:
Break into rival facility to steal new product.
Break into rival facility to extract researcher.
Break into rival facility to sabotage new product/research.
Hack and/or break into rival's offices to plant damaging/embarrassing evidence.
Hack and/or break into rival's offices to transfer money into untraceable accounts.
Hack and/or break into rival's offices to steal shipping schedules, then sell info to pirates.
Assassinate employees/board members of rival.
Frame employees/board members of rival for crimes.
Dig up dirty secrets, then blackmail employees/board members for rival to gain access to/control of something/someone important.
Seduce, then blackmail employees/board members for rival to gain access to/control of something/someone important.
Frame/set up, then blackmail employees/board members for rival to gain access to/control of something/someone important.
Manipulate stock market/public opinion to drive rival out of business.
Leverage buyout/takeover of rival or rival's key subsidiary by using all means listed above (makes a great campaign).
I love this sort of stuff.