The BBC reports: Stronger action must be taken to protect children from online bullying and pornography, MPs have said.
Internet firms are also warned they may face prosecution for failing to show commitment to safeguarding youngsters.
The Commons culture, media and sport committee said efforts by the industry to eradicate child porn may prove "woefully insufficient".
It also said younger children were able to access social media sites owing to inadequate age verification processes.
The committee questioned whether police have sufficient resources to track down paedophiles online and said more funding should be made available if necessary.