One Billion Google Calendar Users Exposed to Fake Invite Scam
Google has said it is "working diligently" to fix a major flaw that allows hackers to hijack a person's Google Calendar through unwanted email invites.
Fake links are being sent asking for personal information.
Scammers are sending fake messages to mobile phone users telling them to change their bank information.
The fake messages to O2 customers claim that payments have not gone through, so customers need to update their payment details.
But the link leads to a fake website - where criminals will steal your bank account details.
The text message to be wary of reads: "O2: Payment for your latest bill could not be processed by your bank. Please update your information".
O2 says it's an SMS phishing scam - or smishing - sent out by fraudsters in the hope that customers will click on a link and enter personal details.
What to do if you get a suspicious text:
What are the signs a message may be fake?
O2 says it will never email, text or call customers and ask for a one-time code, password or other security information set up on your O2 account.
It says the messages can look very convincing and can mimic genuine messages sent by organisations you already deal with.
The signs a message might be fake include: