North Korean social media apparently hacked
April 5, 2013 -- Updated 1502 GMT (2302 HKT)
- Attack has hallmarks of hackers collective Anonymous
- Apparent hackings come after Anonymous demands North Korean leader's resignation
- Official North Korean Flickr account shows image skewering Kim Jong Un
Are you from South or North Korea? Send us your views on the crisis.
(CNN) -- Some official North Korean Internet and social media sites appeared Thursday to have been hacked, possibly by the hacker collective Anonymous.
The hacking -- including an image skewering North Korean leader Kim Jong Un on an official Flickr account -- comes amid rising tensions between North Korea and several other countries including the United States.
The North Korean government website Uriminzokkiri.com was down Thursday morning, and the official @uriminzok Twitter account -- also apparently tampered with -- has messages claiming that Uriminzokkiri, the Flickr site and other North Korean sites have been hacked.
Among the pictures on the Flickr account Thursday: A "wanted" poster with an image showing Kim with a pig's ears and nose.
Crowley: N. Korea's crazy, not suicidal"
North Korea to launch mobile missile?
N. Korea threatens 'merciless' strikes
The poster accuses Kim of "threatening world peace with ICBMs and nuclear weapons."
Another image reads: "We are Anonymous."
On the Twitter account, the usual image atop the page was replaced with one that reads "tango down" -- military slang that has been appropriated by hackers to say they have interrupted service to a website.
The image also shows dancers wearing Guy Fawkes masks. The mask is a favorite symbol of the hacker collective.
If it is the work of Anonymous, it would be appear to be just the latest attack by the group against North Korean sites. Last week, Anonymous, upon leaking account information from Uriminzokkiri.com, announced it would continue to hack North Korean sites if the government didn't "stop making nukes and nuke-threats," according to CNET.
The group also demanded the resignation of Kim, democracy in North Korea, and uncensored Internet access for all North Koreans, CNET reported.
Known for its DDOS, or distributed denial of service, attacks that take websites offline, Anonymous has taken up a number of causes. It had a hand in organizing and agitating in the Occupy movement throughout 2011. It also is known for defending WikiLeaks' Julian Assange and Assange's assertion that all information should be freely available on the Internet.
The hacker collective is an amorphous group that takes pride in not having a single leader or spokesperson, which makes claims by the group difficult to verify.
READ MORE: North Korea's threats: Five things to know
READ MORE: South Korea says hacking not from Chinese address
CNN's Jason Hanna and Ashley Fantz contributed to this story.
Part of complete coverage on
July 2, 2014 -- Updated 2225 GMT (0625 HKT)
As diplomats discuss a string of unsolved kidnappings of Japanese citizens by North Korea, the families of those abducted anxiously wait and hope.
July 3, 2014 -- Updated 2357 GMT (0757 HKT)
When President Xi Jinping arrives in Seoul this week, the Chinese leader will have passed over North Korea in favor of its arch rival.
July 1, 2014 -- Updated 0313 GMT (1113 HKT)
North Korea says it plans to prosecute two American tourists that it detained earlier this year, accusing them of "perpetrating hostile acts."
June 30, 2014 -- Updated 2338 GMT (0738 HKT)
North Korea proposed that "all hostile military activities" with South Korea be halted, but it attached conditions that Seoul is likely to reject.
June 27, 2014 -- Updated 0023 GMT (0823 HKT)
North Korean state news is reporting the country test-launched "cutting-edge ultra precision tactical guided missiles."
June 25, 2014 -- Updated 1145 GMT (1945 HKT)
James Franco won't be following Dennis Rodman into North Korea anytime soon.
June 13, 2014 -- Updated 1104 GMT (1904 HKT)
Don't you hate it when the weatherman gets it wrong? Apparently, so does Kim Jong Un.
June 5, 2014 -- Updated 2344 GMT (0744 HKT)
New signs show Russia and North Korea are developing a closer relationship.
May 22, 2014 -- Updated 0012 GMT (0812 HKT)
Photographer Eric Lafforgue visited North Korea and shares his inside look at the most isolated country in the world.
May 13, 2014 -- Updated 0125 GMT (0925 HKT)
Many North Koreans listen to illegal broadcasts on homemade radios, some are convinced to defect.
May 8, 2014 -- Updated 1926 GMT (0326 HKT)
Jang Jin-Sung, a North Korean defector and former regime insider, speaks with CNN's Christiane Amanpour.
May 13, 2014 -- Updated 1406 GMT (2206 HKT)
iReporter Kenny Zhu visited North Korea in April and was able to take video footage and photos with his Google Glass during the trip.
April 29, 2014 -- Updated 1842 GMT (0242 HKT)
North Korea loves saber-rattling. Here's a look at all the firepower they have stockpiled.
April 24, 2014 -- Updated 0003 GMT (0803 HKT)
CNN's Elise Labott reports on the new baby pictures of Kim Jong Un released by North Korean state media.
April 2, 2014 -- Updated 1127 GMT (1927 HKT)
Experts warn that under Kim Jong Un's rule, Pyongyang has shown an even greater willingness to raise the stakes than before.
March 18, 2014 -- Updated 1314 GMT (2114 HKT)
China and North Korea criticize a U.N. report that found crimes against humanity committed in the Democratic People's Republic of Korea.
March 17, 2014 -- Updated 1205 GMT (2005 HKT)
Megumi Yokota was only 13 when she was abducted by a North Korean agent in the 1970s. What happened after that?
March 12, 2014 -- Updated 0430 GMT (1230 HKT)
Report: North Korea uses multiple techniques to defy sanctions, and shows no signs of abandoning its nuclear missile programs.
Today's five most popular stories