The screw tightens on Google as holding groups advise advertisers to reassess the risks

The advertising walls are closing in on Google now the world's largest advertising groups are reassessing their relationship with the online behemoth following more revelations that ads are still appearing next to inappropriate content on YouTube.
Havas and GroupM have warned the business, which is tipped to control 40% of the online ad market this year that stronger safeguards are needed to protect their clients. While ad misplacement is not a new issue, it has never been as top of mind for mar