I disagree. The state sponsored benefit/low income subvention system is extremely well designed, precisely to ensure that dishonest people have a very difficult time exploiting it. Frequent psychological and medical evaluations, reviews from social workers, police and charity organizations, income controls and compulsory back-to-work schemes... Cheating the welfare system is extremely difficult, and it takes a particularly skilled con artist to do so. However, many of them are found out more often than we know, and just because their picture isn't published in newspapers and they are not publicly punished, doesn't mean that measures aren't taken to make them pay for the abuses they've committed.
I know several social workers, and the proportion of people who are actually cheating the system (at least in the UK), is not even 0.5% of all those who desperately need government assistance. The fact that the media, which is controlled by the same greedy psychopaths who have nearly destroyed the entire planet's economy, constantly promote the idea that there is a very large amount of benefit "scroungers" who have villas in the Antilles and lead lives of luxury at the expense of the middle and lower classes, doesn't make this notion a reality. Besides, the amount of money that a benefit cheater can get is nothing compared to the subventions, gold-plated pensions and bonuses received by many executives from multinationals and financial institutions, who are literally rewarded for their incompetence and mishandling of other people's vital resources. By demonizing the poor and those who supposedly cheat tax payers from what is, in reality, small change, the attention is diverted from the truly atrocious behaviour of many of our society's supposedly cream of the crop.
This is only a matter of approach to a phenomenon, really: as a society, we are taught that, if you are poor and break the law, you deserve punishment. If you are rich, however, you can get away with anything because, obviously, the fact that you are rich entitles you to do exactly what you want, plus you can pay people who will go to any lengths necessary to hide inconvenient truths about your execrable self. That's why so many people are so obsessed with petty benefit cheaters, but don't really pay any attention to the horrible crimes perpetrated by the crooks who truly govern us, and control the politicians who pretend to represent us.
In short, the only bastards we should truly seek to get are the ones who are driven around in chauffeured limousines, waste up to £10,000 on a single jacket and seem to believe that completely destroying other people's lives is just one of their many rights as members of the privileged classes. People who cheat on welfare are difficult to actually find, and they have it incredibly difficult anyway.