This is the warning from insurance companies, who add that making trips abroad public might even invalidate insurance policies.
As the UK enters peak holiday season, nearly 700,000 Brits a month are posting messages about heading for the sun.
Common posts are of planes on the tarmac, pints of beer at the airport, and even passports or boarding passes featuring the person’s address.
“Why not wait until you get back before you share your snaps?”
Figures show you are almost three times more likely to be burgled if you post public messages online saying you’re going away.
But despite this, 58% of people post-holiday snaps online when they are abroad, putting 695,000 empty homes at risk of burglary.
The report, from publicly available data available across the three platforms, found that in 30 days between June and July this year, holidaymakers made 750,000 public posts
An additional 760,000 public airport check-ins took place on Facebook.
From the 29 airports analysed, the highest proportion of passengers who check-in on Facebook per UK departure are:
• Glasgow Preswick (9%)
• Newcastle (8%)
• East Midlands (6%)
• Liverpool John Lennon Airport (6%)
• Birmingham International (6%)
• Robin Hood Doncaster Sheffield (6%)
• Belfast International (5%)
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Newcastle tops the list of those most likely to post pictures of their alcoholic beverages with a third of its social posting passengers, followed by Birmingham (20%), Glasgow (18%) and Manchester (18%).
Spanish sun seekers are the most likely to reveal their final holiday destination (22%, followed by those going to the US (12%).
Jon Craven, CEO of Together Mutual Insurance, said: “We know from our social media research that there is a significant level of risk posed online when people travel abroad that could be affecting the security of households across the UK.
“First and foremost, you should make yourself familiar with your social media security settings, and those of your friends who may be likely to tag you. Why not wait until you get back before you share your snaps, that way you can pick the best bits and reduce your risk?”