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DEFENCE companies such as Lockheed Martin have seen some of their cyber-defences penetrated. Sony, Google, Citigroup and other firms have had sensitive customer data swiped by high-tech intruders. The IMF has been the victim of a digital attack, as has the website of America’s Senate. And a hackers’ collective, called Anonymous, has threatened to launch an online assault on the computer systems of America’s Federal Reserve unless its chairman, Ben Bernanke, agrees to step down.

These and other events—such as the attack on the public website of the CIA, which was disrupted briefly on June 15th—have led to speculation that there has been a big increase in the threat posed by hackers in recent months. They have also reinforced a belief in some quarters that America is already engaged in a cyber war of sorts, most notably with China. Yet such claims are controversial.

Although some security experts think hacking activity has hit a new high, others say such claims are overblown. They point out that laws in some states in America now require firms to reveal if their defences have been breached, which means more hacking cases are coming to light that would previously have been buried. High-profile attacks, such as the ones on the Senate website, also get plenty of media coverage, fuelling talk of an epidemic.

The vast majority of the hacking that does take place is still perpetrated by different sets of private hackers rather than by cyber spooks. Take “hacktivists”, members of such groups as Anonymous and Lulz Security, the outfit that has claimed responsibility for attacking the Senate’s and the CIA’s sites. (To “lulz” means to laugh at someone’s misfortune in jargon.) Loosely organised and motivated by causes rather than money, these online rebels shot to prominence last year. They targeted firms such as MasterCard that shunned WikiLeaks after the transparency group began releasing secret diplomatic cables. And they thrive on the oxygen of publicity, boasting of their exploits on Twitter and other social-media services. Anonymous even announced its intention to target the Fed by posting a video on YouTube. This listed all kinds of recriminations against the central bank, including plenty of bizarre ones such as “crimes against humanity”, scrolled down against a backdrop of eerie face masks that have become Anonymous’s calling card (see picture above).

Hacktivists’ assaults on state targets have prompted governments to try rounding them up. On June 10th Spanish police arrested three men that they claim are core members of Anonymous, which responded by causing a police website to crash. Then on June 13th police in Turkey rounded up another 32 alleged hackers from the group, which had recently attacked a couple of official websites, protesting plans to increase policing of web traffic.

Dmitri Alperovitch of McAfee, a web-security company, reckons that these and future raids will ensure that hacktivism declines as a source of online attacks within six to 12 months. But other experts warn that by trumpeting the arrest of Anonymous members, instead of simply labelling them as common-or-garden hackers, governments are boosting the outfit’s standing. In the eyes of potential recruits such as young “script kiddies”, who first turn to hacking chiefly as a test of their programming skills, Anonymous may now seem more attractive.

While hacktivists are gathering speed, another source of hacking—organised-crime groups—are going about their business as usual. But that means they are using increasingly sophisticated techniques to extract passwords and other personal information from their victims. This then gives them access to data they can profit from in various ways. These gangs are behind some of the biggest data breaches that companies have owned up to (see chart). They also often launch cyber-attacks using “botnets”, or networks of computers that have been taken over without their owners’ knowledge. …

Avec des opérations aussi diverses que Eglise de Scientologie et Egypte, Anonymous commence à être célèbre ce qui peut soit changer radicalement son action, soit devenir une "organisation" avec des hiérarchies et centres de décision.

D'autre part son idéologie n'étant pas claire Anonymous court le risque de manipulation de son images, ses membres vilipendés comme communistes voir terroristes.

Autant des questions qui, je pense, ne trouverons réponse si rapidement, sauf participation de notre honorable forum.

Je remarque sur la photo que l'anonymat des masques n'enlève rien à la personnalité de chacune!

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ses membres vilipendés comme communistes voir terroristes.

Je parie que certains "anonymous" se réclament du communisme, d'autres du libéralisme, d'autres de rien du tout. C'est pour ça qu'il ne peut pas y avoir d'organisation Anonymous : c'est un mouvement très très très hétérogène.

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Il y a déjà un sujet sur Anonymous.

http://www.liberaux….7132-anonymous/

On pourrait renommer le premier sujet ou coller le deuxième!

Sur arte aussi le sujet a été traité (mais de quelle manière!) et je m'attend à une erreur possible quand anonymous s'attaquerait à une cible du genre chaine publique provoquant l'indignation non moins populaire!

D'autant que The Economist finit par:

Code red

Such ploys can make it hard to identify exactly who is behind a particular online assault, says Adam Vincent of Cyber Squared, another security firm. In China things are particularly unclear. Jayson Street, a security researcher who has written a book on dissecting hacks, reckons the Chinese government itself is struggling to contain hacking within the country. He recounts how the website of one regional government he studied turned out to have been compromised by hackers who had made it part of a botnet. Chinese cyber-crooks are only too happy to rent out their networks to other gangs and governments who want to launch attacks using them. North Korea and Russia are said to be among the countries that have taken advantage of such offers.

This does not mean that the Chinese government is innocent of all of the hacking charges levelled against it. A recent study by McAfee of “SQL injections”, a technique used to penetrate databases, showed that around half of the reported attacks in the first quarter of 2011 originated from China. Given the scale of such activity, it is likely that at least some of these were launched by Chinese cyberspies. Google has also dropped heavy hints that the Chinese government was behind a recent hack of Gmail, its web-based mail service, which let online snoopers read the e-mails of high-ranking American officials and those from some other countries.

But China is far from the only country engaged in cyber-espionage. It is surely no coincidence that according to McAfee’s statistics the second-largest source of SQL injections in the first quarter was none other than America. Such probing of a rival’s systems is hardly new, though it has assumed an exaggerated importance because of all the feverish talk of “cyber-warfare”.

According to a report on cyber-security issued earlier this year by the Organisation for Economic Co-operation and Development, the chances of a conflict fought solely in the electronic world are extremely slim. The same report also warns that many high-tech attacks described as acts of cyberwar, including the antics of hacktivists, do not merit the label. That is surely right. Even so they are no laughing—or lulzing—matter.

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