ABC News reports that Lauren and Marc Gilbert of Houston, Texas recently heard the voice of a stranger cursing at their two-year-old daughter through her baby monitor as Marc Gilbert was doing the dishes one evening (h/t Sophos).

The male voice, which had a British or European accent, spoke to their daughter Allyson by name, calling her an "effing moron" and telling her to "wake up, you little slut."

Because Allyson is deaf, she couldn't hear the hacker. "It's somewhat of a blessing," Marc Gilbert told ABC News. "If she had heard it, it would have been a big problem."

Sophos reports that the baby monitor was password-protected, the wireless router was password-protected, and the firewall was enabled.

"Of course, devices may well be protected by passwords, but default passwords that haven't been changed are like having no password at all ... Be careful with these devices' security," writes Sophos' Lisa Vaas. "That starts with changing default passwords."