Everyone enjoys having a more interactive internet experience, and one of the ways websites achieve this is through the use of JavaScript. Unfortunately, hackers and scammers can also utilize the same script to make malicious attacks on your system.

JavaScript makes the web experience very dynamic, enhancing the interactivity of many websites - you’ll see it everywhere, from Facebook to the most obscure sites on the web. Another reason it’s popular is that it’s compatible with all browsers, from Internet Explorer to Mozilla and even Mac’s Safari.

Unfortunately, this popularity and wide range of use also makes JavaScript a tool that hackers and other unscrupulous programmers can use to infiltrate and hack into a system. The attacks can be simple or complicated, ranging from simple spam to more elaborate scams. The degree simply depends on the purpose of the script’s designer. What’s more, a quick visit to an infected website can trigger an attack, if your browser is enabled to allow JavaScript to execute from that site.

The good news is that you can protect yourself from these kinds of attacks. Simply block JavaScript from executing from sites you aren’t familiar with - better safe than sorry.

• For Internet Explorer, go to Tools > Internet Options > Security, and set your bar to High. You can also input a list of trusted sites.
• For Firefox users, a free application called NoScript gives you control over which websites can execute JavaScript on your browser.
• Google Chrome users can select a universal disabling of JavaScript from all sites, and then add a list of sites exempted from the ban.
• Other browsers also have options to either disable JavaScript execution or prompt you for permission before the script is run from any website.

You should also be particularly wary of JavaScript attacks originating from malicious PDF files. Antivirus and security firm Symantec reports that almost half of all web-based attacks come from infected PDF files. You can disable JavaScript in Adobe Acrobat Reader by selecting Edit > Preferences > JavaScript, and then removing the check on “Enable Acrobat JavaScript”.

It might seem inconvenient to guard yourself from these sorts of attacks, but in the long run it pays to keep your system secure. If you want to know more about keeping your system clean and safe from attacks, give us a call and we’ll be happy to help you develop a customized plan that meets your particular needs.

A new phishing technique has been discovered – tabnabbing “morphs” an unused tab in your browser into a lookalike website where you’re prompted to re-enter login information.

Dubbed as “tabnabbing”, the vulnerability was discovered by Aza Raskin, the creative lead for the Mozilla’s Firefox browser and co-founder of Songza, a music search engine and jukebox. Tabnabbing fools users into entering passwords and other sensitive information when an unselected tab in your browser appears to transform itself into a lookalike for a familiar website. You are then prompted you to re-enter a username and password, which in turn passes that information along to the hacker. Incidentally, Raskin’s blog post on the topic (http://www.azarask.in/blog/post/a-new-type-of-phishing-attack/) demonstrates how the website can “change” into a lookalike.

Both Mozilla Firefox and Google are vulnerable to this type of attack, which is classified as “phishing” – a scam where users are tricked into entering login information into fraudulent websites masquerading as legitimate ones. Fortunately, there have been no instances – yet – in which tabnabbing has been used in phishing attacks, but Raskin says that he is “aware of other researchers and toolkits extending and expanding tabnabbing”. However, it’s very likely that phishers will be looking for ways to exploit tabnabbing soon, and are currently no fixes or patches released.

One way you can protect yourself from tabnabbing is to make sure that your browser has the proper anti-phishing features installed. It’s also important that your website is updated with the latest security features since many phishers like to exploit websites running old version web software, which they use to host phishing sites.

If you want to know more about keeping your system secure from the latest malware and security threats, please don’t hesitate to get in touch with us and we’ll be happy to sit down and discuss security options that fit your needs and requirements.

A money extortion scheme was revealed recently by security firm Symantec that warns website owners of a DDoS attack unless they pay up.

Security firm Symantec recently uncovered a scheme that purportedly attempts to extort money from website owners and operators in order to avoid the possibility of a DDoS attack. The capability of these extortionists to actually carry out the threat is still an open question, and it’s more likely that this may simply be an empty threat to try to get money.

The best action against these types of messages is employing screens to block such email from reaching your mailboxes. However, it’s best to seek the services of an expert to determine the extent of risk, and also to employ safeguards and response measures should an attack take place. If you find such messages in your mail, let us know and we can help.

Before you entrust your sensitive data to a “cloud” service provider, make sure you weigh the risks with the benefits.

“Cloud computing,” largely synonymous with Internet-based computing, has become a hot topic of discussion among many in the business community, with its promise of radically simplifying the access to, and use of, computing resources on demand. It’s no wonder then that it’s been small businesses, often without full-time IT resources of their own, that have been the first to adopt the concept. As a business owner, however, before you start moving critical data to the “cloud,” you’ll do well to bear in mind the risks that come with the computing model.

First is security and privacy—ask how the service provider ensures the confidentiality and integrity of your data while in their care. Do they provide backups? Can you back up your data yourself? Are their security processes and procedures reviewed and vetted by a third party?

Next is availability. Do they guarantee the uptime of their services—7 days a week, 24 hours a day? Do they provide a service level guarantee? Do they have processes in place to handle exceptional circumstances that can disrupt services, such as a natural disaster? Is support readily available to help in case you encounter any issues?

Finally, there’s cost. While pay-as-you go can be attractive, the total cost over time can add up. It’s worth thinking two to three years out and considering the total cost versus alternatives.

Asking these basic questions can go a long way in giving you peace of mind before you entrust your valuable data and core business systems to the care of others. If you’d like some help sorting all this out and making the best decision for your unique needs, give us a call.

The continued exploit of many vulnerable applications that have been fixed by vendors for over a year highlight the need to keep software updated with the latest versions and patches.

A new report released by security firm M86 Security reveals a trend toward more sophisticated forms of malware in taking advantage of vulnerabilities in common software applications and developing techniques to avoid detection.

In M86’s report, among the applications commonly exploited are Microsoft’s Internet Explorer and Adobe Reader. Another vector for malware that hackers have been using recently is Java and Adobe’s Flash—which are installed on many PCs, often as plug-ins to most browsers.

Although the vulnerabilities in these applications have been identified and patched for over a year, failure to keep up with the latest updates have made many systems still vulnerable to attack. Our customers taking advantage of our Managed Security need not worry, since we make sure our customers’ systems are patched as soon as updates become available. Find out more about our Security Offerings today.

Mozilla implements new initiatives to ensure the security of its browser to fix the main security holes, and this brings Firefox’s latest version to 3.6.7

The Mozilla foundation, the organization behind the Firefox browser, announced recently that it has released a patch to fix many major security holes found in its software, as well as the pull out of malicious add-ons in its extensions gallery.

A new update brings Firefox’s latest version to 3.6.7, and includes fixes for nine critical issues that could potentially be exploited by hackers to launch attacks on vulnerable systems. This comes after recently pulling out a password stealing add-on called the “Mozilla Sniffer” in the Firefox extensions gallery. As a preventive measure, the Mozilla foundation has announced a US $3,000 security bounty program that for anyone who finds an eligible security bug. It has also announced that it will implement a source code review of add-ons to catch potential malware that could be injected into otherwise patched Firefox browsers.

As always, users are advised to be constantly on guard and to make sure they are using the latest updated versions of their software. Customers under our Managed Security program benefit by letting us do the worrying and updating for them, so they can focus on their business instead of their security. Not on our Managed Security program? Contact us today.

Barely a month after a Google engineer disclosed a critical vulnerability in Windows XP, hackers have taken launched an attack on vulnerable machines.

On June 10, a Google engineer disclosed a security flaw in Windows XP’s Help Center, which can potentially allow hackers to search and retrieve sensitive information from vulnerable PCs, and even turn them into “zombies:”machines that follow the commands of a remote master to perhaps download more malware or send out spam.

Recently, reports have come out that the first real exploit has emerged, with Microsoft reporting that over 10,000 Windows XP systems have already been subjected to attack. The systems attacked are based not only in the US, but also in Russia, Portugal, Germany, and Brazil.

A patch from Microsoft was released on July 13, and workarounds also exist to contain the threat, such as disabling the HCP protocol. Customers of our Managed Security services running Windows XP are assured of immediate support once the patch is rolled out, but in the meantime can take advantage of our assistance to secure systems through other means.

If you’re on one of our Managed Services plans don’t worry – you’re protected. If you’re not sure contact us to find out how we can protect your systems and network from this and other dangerous attacks.

The near ubiquity of WiFi hotspots nowadays has led to great advances in access and convenience for many. It’s also a great boon for “road warriors” who do most of their work from the field.

However, few people understand the risks of using wireless hotspots. When you go online in open networks that don’t use a password or encryption, potentially everything you send out from your computer can be seen by anyone with adequate technical knowledge. Therefore, whenever possible it’s best to connect in places where some encryption—either WEP or WPA—is employed. If that’s not available, using a VPN (Virtual Private Network) can help, which allows you to establish a secure channel of communication to your office network over the public Internet. How you use certain software is also something you should be aware of—some browsers, instant messengers, and email clients are more secure than others.

Wireless hotspots can be great when travelling on business or working on the road. Being proactive about security issues will go a long way in ensuring your safety and privacy, and we’re here to help. We can set up your machines for secure access by implementing a network VPN, consulting on software security, and much more. Contact us today to learn more.

A critical vulnerability in Windows XP has been revealed that involves the Windows and Help support center, a Web-based feature providing technical support information to end users. The vulnerability can potentially allow a remote hacker to take complete control of a victim’s machine. Systems running Windows XP and Windows Server 2003 using many major browsers, including Internet Explorer 8, are affected.

A few days after the advisory, security firm Sophos warned users of a website using the vulnerability to install malicious software on victims’ machines, and of possibly more exploits coming out soon. Users of Windows XP and Windows Server 2003 are advised to disable features within Help Center that allow administrators to remotely log onto their machines. For individual users, Microsoft has released a patch for the flaw.

Don’t know how to install the patch? Need help? Let us know! Of course our customers with Managed Services are automatically advised of these vulnerabilities, and patches are applied as soon as they are available. Contact us today to find our more.

A recent report, released by Osterman Research and sponsored by software vendor Commtouch, reports that the incidents of outbound spam is getting worse. The research firm interviewed 266 end users of internet service providers and 100 web hosting companies. Almost 40% of respondents have had their IP addresses listed on Real Time Blackhole Lists (RBLs) in the past 12 months alone – and the number could be far greater considering those who may not be aware that they have been listed.

RBLs tag machines or networks of machines as being sources of SPAM, causing their emails to be filtered out by many mail servers. This can result in legitimate emails not reaching their intended destination. In addition, having an infected machine or network of machines can waste bandwidth and slow down outbound connections.

The cause of outbound spam varies, but can including everything from compromised email accounts to “zombie” machines – machines infected with malware sending out spam unbeknownst to the user.

There are multiple ways of protecting computers and networks against the risk of outbound spam, and our Managed Services clients benefit from our proactive protection and filtering. Contact us to find out more.