Five stories not to miss

1 Google apologises for extremist ads

Google was forced to apologise to its allimportant advertising customers after a series of adverts on Google and YouTube appeared alongside hate videos and extremist-related content. Organisations as diverse as banks, the UK government and M&S pulled adverts over fears that they could be indirectly funding terrorism.

2 US charges Russians over Yahoo hack

US officials launched legal action against two Russian intelligence staffers and two Russian hackers, claiming the four were responsible for the massive hack of half a billion Yahoo user accounts, revealed last December. The US will doubtless face a tough battle to extradite the accused.

3 Bumper bonus for bug bounty hunters

Google and Microsoft have upped their rewards for hackers who report bugs to their bounty programmes. Google said it was getting harder to find severe threats, so would reward contributors with a maximum of $31,337 – up from $20,000 – for discoveries, while Microsoft’s launched a temporary increase of 100% in areas where the company has specific concerns.

4 Chrome promises background power-saving Google has continued its browser power consumption battle with Microsoft, promising that Chrome 57 would deliver significant improvements in the way the browser handles background tabs. The company says the update will throttle open tabs to 1% of CPU usage. 5 Intel releases Optane SSD with RAM capabilities

Intel took the wraps off its Optane range of SSDs , which uses 3D XPoint memory that can be used for storage or RAM. The initial model is the P4800X, a 375GB SSD on a PCIe card priced at $1,520, with different form factors and capacities due out later in the year. 3D XPoint is a new persistent solid state memory technology devised by Intel and Micron; the companies claim it is significantly faster than NAND, with lower latency.