WASHINGTON， Oct. 21 (Xinhua) -- Twitter， PayPal and some other major United States websites were shut down temporarily on Friday as American Internet infrastructure companies Dyn and Amazon were hit by waves of cyber attacks.
Dyn， headquartered in New Hampshire， said in posts on its website that its Domain Name System (DNS) infrastructure suffered three waves of distributed denial of service (DDoS) attacks， which flooded it with traffic from multiple sources to make it inaccessible.
The company said the first wave was a "large" DDoS attack that started at 7:10 a.m. EDT (1110 GMT) and mainly affected the U.S. east coast.
"Dyn's engineers were able to successfully mitigate the attack at approximately 13:20 UTC (1320 GMT)， and shortly after， the attack subsided，" it said.
Compared with the first wave， the second one that started at about 11:50 a.m. EDT (1550 GMT) and lasted until 1:00 p.m. EDT (1700 GMT) was "distributed in a more global fashion，" with affected customers possibly seeing "intermittent resolution issues as well as increased global latency，" according to the company.
At around 4:00 p.m. EDT (2000 GMT)， Dyn reported a third DDoS attack， which it said had been "resolved" a little over two hours later.
Amazon Web Services (AWS)， a unit of Amazon that hosts many of the web's popular destinations including Netflix， also reported an attack that affected people on the U.S. east coast around the same time in the morning.
"Between 4:31 a.m. (1131 GMT) and 6:10 a.m. PDT (1310 GMT)， we experienced errors resolving the DNS hostnames used to access some AWS services in the US-EAST-1 Region，" the company said on its website.
But this issue has been resolved and the service is now operating normally， it noted.
The attacks reportedly kept many users in the United States and parts of Europe from accessing Twitter， PayPal， Reddit， Spotify， Netflix and other sites.
Digital payments company PayPal was one of the companies that admitted experiencing brief service interruptions due to the attacks.
"We're sorry for the inconvenience，" PayPal tweeted.
White House spokesman Josh Earnest said the U.S. Department of Homeland Security is monitoring this situation and will take a close look at it.
"But at this point， I don't have any information to share about who may be responsible for that malicious activity，" Earnest told reporters.
A senior U.S. intelligence official told NBC News their current assessment is that this is "a classic case of internet vandalism."
The official was quoted as saying that it does not appear at this point to be any kind of state-sponsored or directed attacks.
A group called New World Hackers claimed responsibility for the attacks via Twitter， although their claims cannot be independently verified.
In its Twitter account， the group retweeted a tweet from a person who spoke with it， saying the attacks were "a test of attack power" and that "their main enemy is Russia."
Afghan women carry the coffin of Farkhunda Cheap Ken Daneyko Jersey , 27, who was lynched by an angry mob for allegedly burning the Koran, in central Kabul on March 22, 2015 (AFP PhotoWakil Kohsar) Crowds turn out for the funeral procession of Farkhunda Cheap Cory Schneider Jersey , 27, who was lynched by an angry mob for allegedly burning the Koran, in central Kabul on March 22, 2015 (AFP PhotoWakil Kohsar) Relatives and family of Farkhunda Cheap Taylor Hall Jersey , 27, who was lynched by an angry mob, mourn at her home in central Kabul on March 22, 2015 (AFP PhotoWakil Kohsar) Pigeons surround the Shahi Doshamshira mosque where an Afghan woman was beaten to death and her body set alight by a mob Wholesale New Jersey Devils Jerseys , in Kabul on March 20, 2015 (AFP PhotoShah Marai) Afghan women carry the coffin of Farkhunda, 27, who was lynched by an angry mob for allegedly burning the Koran Wholesale Devils Jerseys , in central Kabul on March 22, 2015 (AFP PhotoWakil Kohsar)
Kabul - Hundreds of people on Sunday attended the burial of an Afghan woman who was beaten to death and set on fire by a mob for allegedly burning a copy of the Koran.
Authorities announced the suspension of 13 police officers as well as multiple arrests over the lynching, which took place in full view of several policemen and sparked widespread condemnation at home and abroad.
The body of Farkhunda, 27 Cheap New Jersey Devils Jerseys , who was lynched on Thursday by an angry crowd in central Kabul, was carried to the graveyard by women amid crowds of men, an AFP reporter said, a rare act of protest in a male-dominated society.
The crowd Cheap Devils Jerseys , shouting "Allah o Akbar" (God is greatest), demanded the government bring the killers to justice.
"This is a crime against this family, a crime against a sister and a crime against humanity," said Bari Salam Cheap Jesper Boqvist Jersey , a human rights activist.
"All those involved and all those who supported her killing should be brought to justice," he said.
The United Nations said Farkhunda, who was known by only one name, had "suffered mental illness for many years".
But her father told the media his daughter had a diploma in Islamic studies and could recite the Koran by heart. He insisted she was not involved in burning the Muslim holy book.
Farkhunda's brother Najeebullah Malikzada supported his father's claim.
"Farkhunda was a deeply religious girl. She used to recite the holy Koran and pray five times a day Cheap Joseph Blandisi Jersey ," he told the crowd.
Footage of the attack on social media shows a number of uniformed police watching the crowd as they beat her to death, burn her body and then dump it into a river.
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"This brutal act once again shows the incompetence of the police force," Mariam Mustafawi, one of those at the burial Cheap Miles Wood Jersey , told AFP.
"Today our police force is unable to enforce the rule of law. How can they protect us against the enemy?"
President Ashraf Ghani condemned the killing as "heinous" and ord. Jerseys
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