by Orlando Scott-Cowley
Spear phishing is the new frontline in the battle to protect enterprise systems and data. As security scanning or gateway security services like ours have made it hard for traditional spam or phishing attacks to target businesses, the offenders are now moving towards spear phishing.
Targeted Threat Protection is a new service to protect enterprises from the growing risk they face from spear phishing.
Spear phishing is a targeted attack using embedded malicious links in an email that appear to come from a trusted individual or organization. Once clicked, the organization’s security is compromised when the user is tricked into giving away sensitive credentials or is taken to a site that exposes their systems to malware. These emails are often created following social engineering reconnaissance that helps to make them look legitimate.
The rise in targeted attacks is linked to a broadly acknowledged principle defined by IT teams – that users are the weakest security link in a company’s network. IT teams work hard to block the majority of external attacks at the email gateway but an innocent click from an email to an infected site can undermine all this work. Even those with traditional web scanning in place may not be safe if the link is accessed from a mobile or personal device.
To combat this threat, we’ve announced Targeted Threat Protection. The new service scans all URLs in inbound emails every time they are clicked by the user, even if it’s through mobile devices not provided by the employer. This is done for all links in every email whether the sender is ‘known’ or not. The user has peace of mind knowing all links clicked on in email are protected and if the links is safe there’s no interruption to how they work – the site will open as normal in the browser.
However, if they do click on something malicious Mimecast will block access to the site, let them know and give them options on what to do next based on their security profile set by the IT team.
Wholesale URL protection of this kind is more safe and effective than attempting to detect a single phishing email and recognizes that links can start safe but be compromised at a later date. Links in emails are scanned every time they are clicked to ensure they are safe – not just the first time.
For IT and security teams, this new service protects the organization whether users are in the office or not, something on-premise security options struggle to offer. They also have peace of mind that the cost of the service is easy to predict as it’s licensed per user and not per device.
In addition, no extra resources are needed to implement the service – it doesn’t require installation on devices or for end-user’s browser proxy configurations to be changed.
It’s controlled from a single Administration Console alongside other Mimecast services, which provides full visibility of blocked links and sites to assist administrators with ongoing threat management, reporting and any end-user education designed to reduce future risky online behavior. This information is accessible through an easy-to-use search log which can answer complex commands such as ‘show me users who clicked bad links yesterday’. This data can be used by administrators to set different policies by end-user based on their security profile e.g. block outright any at-risk site or offer a warning page to alert more informed users.
The threats to an end-users’ inbox are constantly changing and have moved far beyond the daily barrage of spam and virus content on their work desktop. We have to protect their work and personal desktop, laptop, tablet and smartphone as today they use them all for accessing enterprise email. With next generation services like Mimecast’s Targeted Threat Protection, companies can stay ahead of increasingly sophisticated attacks without increasing the workload of IT teams.
If you’d like to talk to Mimecast in person about the email security threats and how our services can protect you and your company, we’ll be attending Infosecurity Europe this week at stand F86 – if you’re in London and attending do drop in.
by Orlando Scott-Cowley
Last month Israeli security forces imposed their right to examine your email at their border crossings; the initial panic was calmed by a clarification from the Israeli Attorney-General stating the specific circumstances for the search. Previously, in 2009, the United States imposed a right to search your electronic devices, and keep them for further examination, at border crossings too—without any suspicions of wrongdoing. Are these signs that our local data is no longer private when we travel?
State sponsored search of your devices, and data, now becomes the latest privacy worry for any international travellers; we’ve always been worried about malicious attempts to gain access to our data, or having our laptops stolen from airport security screening points, but now the case for travelling completely clean is made.
Many technology travellers I talk to have always maintained a set of clean equipment, which is only used on trips outside their native country. Before and after every trip their laptop, smartphone, and tablet get factory wiped and restored from a known good image. This is especially important when returning from a trip to ensure the platforms remain clean – those devices are also replaced more frequently than home devices, and are occasionally stripped to check for “extra hardware”.
Maybe; but more sensible than paranoid, as we’re in the days of state sponsored hacking such as Flame, Stuxnet and Duqu.
If you’re wondering how you manage to work in such a sterile environment – have a think about how the cloud supports your remote working now. Keeping your data on your local hard drive isn’t the necessity it once was; it seems quite antiquated to me.
Cloud services that allow you to store your data online mean you’re only ever a click away from that data, and given the ubiquity of Internet access these days, that’s never a problem. Of course data stored in the Cloud isn’t beyond the reach of search warrant of subpoena, but at least it’s not local on your device being carried through a border crossing.
Email inboxes should remain empty until you’re safely through a border crossing, and on a known and trusted network. Once you’ve downloaded your recent email remember to remove the account and wipe the device before you leave the country too; there’s no sense taking the precaution for inbound border crossing and forgetting about the outbound.
The same applies to file data, leave your files in the cloud and only access them when it’s safe. Don’t store anything locally unless you can securely wipe the hard drive after use.
From an enterprise IT perspective; CISOs and CIOs should educate their users on how to handle such incidents, and of course draw up a policy for international travellers. It does occur to me that your IT department can help, by disabling your access to ‘their’ services on your devices until you give them the go ahead once safely at your destination. Deleting your stored passwords on devices would also prevent the access of data not stored locally.
For travellers the Cloud should now be as essential as your flight socks and money belt. As someone before me once said – “Don’t leave home without it”.
by Orlando Scott-Cowley
Doctor Who: Series 7 Part 2, The Bells of Saint John.
There’s something in the WiFi. You know you’ve made it as an actor and as a security issue when you appear on Doctor Who. If, like me, you tuned-in to (showing my age there, who “tunes-in” anymore?) the new series of Doctor Who last weekend, you may have chuckled at the use of WiFi networks as a medium for evil. Rogue Access Points that upload the soul of their users, leaving them trapped inside a Spoonhead, sorry server, somewhere in London’s Shard building. Kudos to the script writers for the plot, and for renaming servers, spoonheads – I’ll be in the spoonhead room.
“I don’t know where I am… I don’t know where I am…” is a cry most IT managers, administrators and help desk staff have heard in their time; usually from hapless users trying to find their way onto the network or perhaps around their desktop, rather than being trapped inside an evil WiFi network. That wasn’t lost on me, nor was the uploading of souls; something we might think Facebook has in their roadmap–or at least the curating of your own soul. The evil walking WiFi base stations, hoovering up data and people, did remind me of Google Street View cars that were caught hoovering up WiFi networks, but I’m sure that’s coincidental.
Now, while not all WiFi networks are this evil there are certainly many we should avoid. I’m still amazed to see the SSID “Free Public WiFi” whenever I’m on a train or at an airport; while not necessarily unsafe, it does indicate an old an unpatched version of Windows XP is running somewhere – which in itself is terrifying. Others are certainly more dangerous; there’s often a looky-likey network at conferences or near popular coffee shops, designed to trick you into joining and routing your traffic through them. This is just plain unsafe and even on open public networks you should always use a VPN or at least HTTPS connections. Firesheep was an excellent demonstration as to how vulnerable unencrypted web traffic is on open wireless networks.
As IT professionals we’re constantly reminding our users of the security risks associated with the unknown; like free or open WiFi networks as well as clicking links in email. Hopefully now Rogue Access Points have made it to prime-time this job will be a little easier.
I’m waiting to see if there is another episode of Doctor Who dedicated to Phishing emails, or perhaps password sniffing, but in the mean time I’m trying to work out how to change my SSID to that funky font used in Doctor Who.
Remember, if you’re looking for WiFi and sometimes you see something a bit like this, don’t click it.
by Orlando Scott-Cowley
This weekend Evernote became the latest cloud vendor to have its systems breached; user data including passwords has been compromised. In case this is news to you, a quick recap – Evernote assured us that passwords were correctly hashed and salted unlike LinkedIn, who neglected to salt their passwords. Evernote didn’t tell us whether or not the salts were compromised too. The attack “follows a similar pattern” to others so we can assume some sort of long term APT style compromise.
There are a couple of interesting observations one can make as a result of this last hack.
The usual amount of your-data-in-the-cloud-is-not-secure media hysteria has been dished out; no doubt some Evernote users will be busy deleting their notes as a result, even though their contents are probably as interesting as the ingredients list on a bottle of water. Being an Evernote user (yes, I have reset my password) I can’t help but think this isn’t about data in the cloud, or about the cloud at all; this is more about a target. Evernote was the target in this instance, before them it has been LinkedIn, Facebook, Yahoo, RSA Security, New York Times, Iranian nuclear centrifuges, the list goes on. Once the target has been identified this sort of “coordinated attempt to access secure areas” is likely to succeed regardless of the data’s location. The data could be anywhere; in the cloud, a server on your LAN, one of your users’ laptops (Facebook), a mobile device, a filling cabinet (remember those) or even data left on someone’s desk – the attackers will use whatever means they need to compromise that data.
Secondly, if there is weak security protecting that data, again the location is unimportant. Putting the data in the cloud on a dedicated platform means, as in Evernote’s case, the breach can be monitored and contained by people who’s job it is to do that. There is very little one can do to contain the old school espionage attack that reads secure material from your desk or even from your rubbish bin.
Evernote did the right thing and alerted its users to the hack, emailing them to advise password resets. They did slip up slightly though, by providing a link in the same email that also suggests users should “Never click on ‘reset password’ requests in emails — instead go directly to the service”. But to be fair, this is the first time Evernote has had to deal with this threat.
What this sequence of events really means is that 2013 could be the year that cloud service providers will rebalance their priorities, so that preparedness for attacks will be as important as getting the latest app version out the door, and also that we as consumers realise the importance of our data regardless of where we leave it.