It might be worth contacting members of Cisco's board of directors to inquire whether they plan to do something to avoid this kind of illicit behavior in the future. A board of directors doesn't manage day-to-day affairs, but is ultimately responsible for high-level oversight. The Cisco board of directors includes a number of people with generally solid reputations (including the president of Stanford University) who ought to be shocked if a company under their watch has engaged in this sort of behavior.
Alternatively/additionally, many of us have occasion to do business with Cisco now and then, and if you currently do, you might mention a concern to your local Cisco office/representative.
These days they'd be more concerned if people on this site refused to work for them and passed this story around to friends who would avoid it as well.
Here is a list, though you'll have to search elsewhere for contact information: http://investor.cisco.com/directors.cfm
Alternatively/additionally, many of us have occasion to do business with Cisco now and then, and if you currently do, you might mention a concern to your local Cisco office/representative.