Researchers at Israeli cybersecurity firm said Wednesday they had found a flaw in WhatsApp that could allow hackers to modify and send fake messages in the popular social messaging app. CheckPoint said the vulnerability gives a hacker the possibility "to intercept and manipulate messages sent by those in a group or private conversation" as well as "create and spread misinformation". Last month, the app announced limits of forwarding messages following threats by the Indian government to take action after more than 20 people were butchered by crazed mobs after being accused of child kidnapping and other crimes in viral messages circulated wildly on WhatsApp. WhatsApp said in a statement: "We carefully reviewed this issue and it's the equivalent of altering an email to make it look like something a person never wrote." However, WhatsApp said: "This claim has nothing to do with the security of end-to-end encryption, which ensures only the sender and recipient can read messages sent on WhatsApp."