AdGuard names 6,000+ web trackers that use CNAME chicanery

Privacy researchers recently found that the presence of CNAME trackers has increased 21 per cent over the past 22 months and that CNAME trackers show up on almost 10 per cent of the top 10,000 websites. Worse still, 95 per cent of websites that fiddle with their domain records in this manner leak cookies, which sometimes contain sensitive information.