The canal near Park Road Bridge in Devizes, scene of the latest canalside attack
The woman, who is profoundly deaf, was walking near Quakers Walk shortly before mid-day on Sunday when a thief snatched her handbag containing a small amount of money.
Police Inspector, Ron Peach said: "She was not physically hurt — but she was badly shaken by the incident. This was a despicable, cowardly attack on a vulnerable and defenceless victim and we need to catch this man and bring him to justice as quickly as possible."
The attacker is described as a tall, thin man wearing a fawn-coloured hooded top with the hood up and drawn tight.
Anyone with information about either incident should contact the police on: 0845 4087000 or Crimestoppers on 0800 555111 where information can be left anonymously.
See: Man robbed and injured in Devizes canalside attack