Tag Archive for hacked

LinkedIn Compromise of Passwords is Real

Multiple sources in the security field have reported today that LinkedIn was hacked and the list of password hashes posted on a forum.  I can also add myself to @ErrataRob findings confirming that my password was on that list.

At this time files posted on the forum have been taken down and LinkedIn has now confirmed that “some” of the user passwords are real.

Here is a small excerpt from the dump:


These passwords are encoded using a cryptographic hash function called SHA-1. A hash function is a one-way mathematical function that takes an arbitrary block of data and returns a fixed-size bit string.

In order to retrieve the password from this SHA-1 string, hackers use an attack known as a Rainbow Tables attack, which consists of calculating the hashes for the passwords; so once you get the hash to do a reverse lookup of the hash you have previously calculated and get the password. These tables of passwords and their hashes are widely available on the Internet including http://www.onlinehashcrack.com/

If your password is simple, its pretty likely that your hash is already stored on a rainbow table.

So I calculated my SHA-1 hash by using the following command on my laptop.

echo -n ‘mypassword’ | openssl sha1

This command  calculates the one-way SHA1 hash for my password.

I then stripped the first 6 characters from the hash and looked it up in the combo_not.txt file that contained the compromised list of passwords.

YCombinator has a post that explains what the meaning of the initial “0”s mean within the hashes and the reason why I deleted the first 6 characters.

So the LinkedIn hack is real and you need to change your password NOW. If you happen to use that password for other websites, change those too and do not use that password again.

How could have LinkedIn prevents this:

Not only were the access controls that LinkedIn had in place prove to be insufficient, but they apparently had no detective controls to alert them that the breach occurred judging by their public responses and the silly statements that no evidence of breach had been found.

Furthermore LinkedIn could have made the password information useless if a technique called ‘salting‘ had been used on the stored hashes. This is common of web applications as many store users passwords as a hash in the database.

It would help LinkedIn’s reputation to be as forthcoming as they can with what they know as they know it.

UPDATE: Link to mirror forum here.

Its the FMI’s Turn at Being Hacked

Within weeks of the World Bank’s story breaking about its computer systems being breached by hackers, Fox News has reported here that Cyber-Hackers have broken into the IMF computer system.

The International Monetary Fund (IMF) is an international organization that oversees the global financial system by following the macroeconomic policies of its member countries, in particular those with an impact on exchange rates and the balance of payments. It also offers financial and technical assistance to its members, making it an international lender of last resort. Its headquarters are located in Washington, D.C., USA.

The IMF of course absolutely denies that the event took place. The spyware discoveries came at a particularly sensitive time for the international bailout institution, which along with the World Bank is expected to play a central role in trying to combat global financial turmoil.

This is too much of a coincidence in my opinion. Any information taken by the attackers will likely be used as leverage to blackmail the institutions rather than being made public to embarass them.

In fact, the computer assaults on the World Bank and the IMF are only part of a rash of sensitive cyber-burglaries that even reached into the U.S. presidential campaign. Both London’s Financial Times and Newsweek recently reported that the computer network of the White House, and the Obama and McCain campaigns, were seriously breached.

The Pentagon claims the Chinese army has established units to develop viruses to attack enemy computer systems. Chinese hackers penetrated the Pentagon last year, in an attack that obtained e-mails from the system serving Defense Secretary Robert Gates.

Despite vigorous Chinese denials, “everyone in the intelligence community knows that China is the biggest player in cyber espionage,” says John Tkacik, a former head of China intelligence for the U.S. State Department. Tkacik told FOX News that later this month, President-elect Obama will be presented with a new top-secret National Intelligence Estimate (NIE) report that “will cause the scales to drop from his eyes” regarding Chinese cyber-espionage.

“What the Chinese are particularly interested in at the IMF is what loans the IMF is likely to give to other countries,” says Nick Day, a former British intelligence officer who runs Diligence, a private investigative firm that does extensive work for many international corporations and institutions.

“The geopolitics of this is that essentially you’ve got a few countries in the world that are stacked on huge foreign capital reserves — Russia, China, Japan, the Middle East — and the rest of us are pretty much borrowers to those lenders.


World Bank Hacked

Earlier this year, the World Bank suffered a server security breach in which hackers were able to compromise critical servers.

In what Fox News characterized as an “Unprecedented Crisis“, were one of the largest repositories of sensitive data about the economies of every nation, had been raided repeatedly for more than a year.

It is still not known how much information was stolen. But sources inside the bank confirm that servers in the institution’s highly-restricted treasury unit were deeply penetrated with spy software last April. Invaders also had full access to the rest of the bank’s network for nearly a month in June and July.

In total, at least six major intrusions — two of them using the same group of IP addresses originating from China — have been detected at the World Bank since the summer of 2007, with the most recent breach occurring just last month.

In a frantic midnight e-mail to colleagues, the bank’s senior technology manager referred to the situation as an “unprecedented crisis.” In fact, it may be the worst security breach ever at a global financial institution. And it has left bank officials scrambling to try to understand the nature of the year-long cyber-assault, while also trying to keep the news from leaking to the public.

• Click here to see the e-mail.

The crisis comes at an awkward moment for World Bank president Robert Zoellick, who runs the world’s largest and most influential anti-poverty agency, which doles out $25 billion a year, and whose board represents 185 member nations. This weekend, the bank holds its annual series of meetings in Washington — and just in advance of those sessions, Zoellick called for a radical revamping of multilateral organizations in light of the global economic meltdown.

The bank’s chief information officer, Guy De Poerck, has engaged Price Waterhouse Coopers to do a confidential million-dollar assessment that is expected to tell him what’s going on in his own department.

What is very peculiar about this story is that no other news agency has reported the event and that Fox News was able to acquire internal e-mails and memos regarding the attack.
Jack Conde, Senior Enterprise Risk Management Officer at World Bank shared with executives on July,10, the extent of the breach here. According to the memo at least 17 servers were breached and were slowly being taken offline to perform forensics.

The memo goes on to say what steps they will take in the future to prevent information leaving the network, like implementing an outgoing firewall rule preventing communications being initiated from within the network.

A major effort is underway to implement a firewall rule that will bar all outbound traffic from server networks to the internet with exceptions made for servers with a legitimate reason to make such connections. To this end, ISG staff is creating a daily report of traffic which will be vetted by ISG service managers and OIS to insure that all exceptions are explained and justified. The rule will be implemented on Friday. This effort will curtail any data lost from production servers in the future.

This a normal reaction to a breach, were measures that should have been in place were not, but any such action should always be considered carefully to determine if it will actually prevent data loss or provide a false sense of security.

In the age of spyware, malware, keyloggers and hamachi, the biggest threat to corporate data comes from within.

What would be achieved by a firewall rule restricting Internet access? Well, absolutely nothing when the servers have access to every PC on the internal network and subsequently these PC’s have inherent access to the Internet.

In this particular situation were the attacker was able to compromise in excess of 17 servers and go undetected for so long, can only lead to 2 conclusions. Either the security guys are clueless or the attacker or attackers knew what they were doing.

In plainspeak: “They had access to everything,” says the source. “They had the keys to every room at the bank. And we can’t say whether they still do or don’t until we fully and openly address what’s happening here.”

Now this is not a small business, a law firm, or a retail chain. This is the World Bank, so I am inclined to believe that the keepers of the data are professionals and subsequently it would be wise to think that the attacker is not stupid.

Having access to the servers that were compromised and knowing that sooner or later someone was going to discover the breach, it wouldn’t be far fetched that the attacker would create false accounts and personnel records to back them up in the SAP (ERP), HR and Secure ID systems of the 10,000 plus employee organization.

This would give an attacker the capability to restore access once the breach was discovered triggering the containment plan. Additionally the attacker had gained system administrator access providing access throughout the corporation, providing the potential of creating backdoor’s into virtually any desktop computer in the network.

After FOX News published its story, a World Bank spokesman issued the following statement:

“The Fox News story is wrong and is riddled with falsehoods and errors. The story cites misinformation from unattributed sources and leaked emails that are taken out of context.

“Like other public and private institutions, the World Bank has repeatedly experienced hacking attacks on its computer systems and is constantly updating its security to defeat these. But at no point has a hacking attack accessed sensitive information in the World Bank’s Treasury, procurement, anti-corruption or human resources departments.”

In the security field, you have to be paranoid and levelheaded, specially if you are working in an outfit like this.

Hey World Bank…. if you need a hand… drop be a line.