In this task, you are given an article. Your task is to summarize the article in a sentence.

Q: The vulnerability might leave users open to stalking, harassment or persecution, said the researchers.
By spoofing requests to the servers behind the apps, researchers were able to track people as they moved around during the day.
One app maker has fixed the loopholes in some nations but most users are still at risk, they warned.
The location-leaking vulnerabilities were found by Colby Moore and Patrick Wardle from cybersecurity firm Synack. The pair focused most of their attention on gay dating app Grindr but said other dating apps were vulnerable in the same way.
They found that they could exploit a feature of Grindr that tells users how far away they are from other people who have signed up to use the service and share where they are. The app calls on several different sources of data to provide very precise measurements of this distance.
To exploit the loophole the researchers sent several requests to servers behind Grindr, each one appearing to come from a different location. This let them get multiple estimates of a target's distance from these separate places. This made it possible to calculate a person's exact location by triangulation.
In a presentation at the Shmoocon conference, Mr Colby showed how he was able to use the loophole to map all Grindr users in San Francisco's Bay Area and those at the Sochi winter Olympics. Correlating this location data with information from social media sites would make it easy to find out someone's identity, he said.
While exploiting the loophole was not straightforward, said the researchers, there was evidence that it was being abused in Egypt to harass some dating app users.
He said Synack had told Grindr about the vulnerability which prompted the firm to update versions of its app available in nations where homosexuality is illegal or which have a history of violence against gay people.
It added that it had made it easy for people to stop sharing their location if they were worried about how it could be abused.
In a blogpost published soon after it was told about the problem, Grindr said that it had no plans to change the location finding system in nations where it was used because it was a "core function" of the service rather than a security flaw.
As a result, Mr Moore told tech news site Ars Technica, the problem still existed for Grindr users outside nations where location sharing was turned off.
"We were able to replicate this attack multiple times on willing participants without fail," he said.
He said Grindr could make it much harder to exploit the bug by checking where people were making location requests from and stopping those that were obviously spoofed. In addition, he said, the firm could make the location data less precise to help obscure people's locations.

A: Many mobile dating apps can be hacked to expose the exact location of users, warn security experts.
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Q: The 23-year-old 6ft 3 in striker joined Reading in July 2015 after scoring 22 goals for non-league Billericay Town.
He then ended last season on loan to League Two side Wycombe Wanderers.
He failed to score in his 10 games for the Chairboys, in which their only win was against Stevenage.
"We are determined to add strikers to the backbone of the side that finished strongly defensively last season," said Stevenage chairman Phil Wallace.
"Rowan is an exceptional athlete and a big lad, but the step from non-league to the Championship is a huge jump for an inexperienced young player. He'll need time to evolve."
Stevenage have also signed left-back Andrew Fox from Peterborough United and Ebbsfleet striker Matt Godden.
Boro have also signed keeper Jamie Jones on a more permanent basis, having kept six clean sheets in 17 games last season on loan to Darren Sarll's side from Preston.
Find all the latest football transfers on our dedicated page.

A: Stevenage have made their third new signing by bringing in striker Rowan Liburd from Championship side Reading for an undisclosed five-figure fee.
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Q: Zoe Frangou said she was "disgusted" by her treatment in a store at Bluewater, Kent, and was then "patronised" by the complaints department.
Mothercare apologised to Mrs Frangou and said it supported nursing mothers.
The firm said its policy was to allow customers to breastfeed their children anywhere on the premises.
It is carrying out an investigation into Mrs Frangou's complaint.
In a post on Mothercare's Facebook page Ms Frangou said she visited the store in September.
She said her baby was on antibiotics for an ear infection and had slept for five hours before waking up hungry.
She found an empty area of the shop and discreetly began to feed him.
She said an assistant "marched over" and told her to stop because they were "moving things around and it was dangerous".
She claimed the assistant "gave me a dirty look and walked away", when she protested.
Mrs Frangou said her complaint to the company was met with a pre-scripted apology.
"I am disgusted and find it completely unacceptable," she said.
Mothercare has apologised to Ms Frangou for the "disappointing" way she was treated.
It added: "We provide all our stores with our breastfeeding policy which clearly states our full support for nursing mothers.
"Our customers are welcome to nurse their children anywhere on the premises and for those who prefer some privacy, we provide comfortable feeding facilities.
"We are saddened to hear that on this occasion, our guidelines were not adhered and her complaint was not dealt with immediately.
"We are fully investigating this incident and will be making sure that all our store teams are aware of our breastfeeding policy and guidelines."

A:
A mother has spoken of her shock at being told to stop breastfeeding her baby in the UK's best-known maternity store, Mothercare.
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