This paper looks at the vulnerabilities in the UK’s electoral process in the form of the lax regulation around digital political adverts. Such adverts can be bought cheaply and tightly micro-targeted at individual voters. The current fines levied against groups who over-spend on campaigns is low enough that not only do they provide no deterrence to overspending, the fines risk becoming actively “costed in” to campaigns mounted by well-funded yet unscrupulous organisations.