Nokia New Zealand has apologised to clients and its followers on Twitter for its offensive tweet. The abusive tweet caused a retweeting frenzy in Twitter with images of the Nokia NZ's tweet being reposted around the Internet.

The offensive message, "F***k you", remained in Nokia New Zealand's Twitter account for 13 minutes before it was deleted by the company. Nokia NZ then tweeted a quick apology to its followers and said it will investigate the source of the offensive tweet.

Reports have not mentioned whether or not Nokia NZ'z Twitter was hacked or the message was a prank from an angry employee. Some Twitter users speculated that the post was sent using a text message sent to Nokia NZ's account.

Nokia NZ said it was aware of the offensive message and an investigation has been launched to determine its origin.

Twitter security

Meanwhile, in an attempt to thwart hacking, Twitter is following in the lead of other tech companies to boost its security. The new improvements are expected to make it difficult for hackers including government spies to uncover user data.

According to reports, Twitter has added a security measure that will use individual but temporary keys to encrypt each Internet session. Known as the forward secrecy method championed by Google, the improvement will keep an outside party from using the same key to decrypt messages.

Twitter said the additional security feature will cause a lag while connecting to Twitter. U.S. users may experience up to 150 seconds of lag time while those in other countries will have a delay of 1 second while logging in.

The NSA controversy revealed by whistleblower Edward Snowden has prompted tech companies like Google and Facebook to adopt extra security measures to protect the data of their users.

Hacking on Twitter is no longer new with the Syrian Electronic Army taking credit for an attack on United States President Barack Obama's Twitter account in October. The group of hackers is sympathetic to Syria's President Bashar al-Assad. They targeted the link-shortening service used by President Obama's account to link to a story on the Washington Post about immigration.

When users clicked on the link, a half-hour long video posted on YouTube appeared, showing footage of the 9/11 attacks.