Industry Intel

Amazon User Receives Thousands of Alexa-Recorded Messages

Upon requesting all his user data from Amazon, one user promptly received over 1,700 recorded messages from an Alexa device. Unfortunately, the individual didn’t own such a device. The messages were from a device belonging to complete stranger, and some of them could have easily been used to find the identity of the recorded person. While Amazon did offer the victim a free Prime membership, it’s cold comfort, as these devices are constantly recording and uploading everyday details about millions of users. 

San Diego School District Hacked

In a recent phishing scheme, hackers successfully gained the trust of a San Diego Unified School Districtemployee and obtained credentials to a system that contained student, parent, and staff data from the past decade. The database mostly consisted of personal data for over half a million individuals, but also included student course schedules and even payroll information for the District’s staff. 

Data Breach Affects Hundreds of Coffee Shops

Attackers were able to access payment data for 265 Caribou Coffee shopsacross the United States. The breach could affect any customers who made purchases between the end of August 2018 and the first week of December. The company recommends that any customers who may have visited any of their locations across 11 states engage a credit monitoring service to help avoid possible fraud.

FBI Shuts Down DDoS-for-Hire Sites

At least 15 DDoS-for-Hire siteshave been taken down in a recent sweep by the U.S. Justice Department, and three site operators are currently awaiting charges. Some of the sites had been operating for more than 4 years and were responsible for over 200,000 DDoS attacks across the globe. This is the second in a series of government-led cyberattack shutdowns over the last year. 

Email Scam Offers Brand New BMW for Personal Info

A new email scam is informing victims that they’ve just won a 2018 BMW M240iand over $1 million dollars, which they can easily claim if they provide their name and contact information. Victims who provide their contact details are then contacted directly and asked to give additional information, such as their social security number and credit or bank card details. If you receive this email or one like it, we recommend you delete it immediately, without opening it. 

Facebook API Bug Reveals Photos from 6.8 Million Users

Facebook announced this week that an API bug had been found that allowed third-party apps to access all user photos, rather than only those posted to their timeline. The vulnerability was only available for 12 days in mid-September, but could still impact up to 6.8 million users who had granted apps access to their photos in that time.

Children’s Charity Falls Victim to Email Scam

Over $1 million was recently diverted from a children’s charity organization after hackers were able to gain access to an internal email account and begin creating false documents and invoices. Due to a lack of additional authentication measures, the funds were promptly transferred to a Japanese bank account, though insurance was able to compensate for most of the loss after the scam was finally discovered.

Email Extortion Scams Now Include Hitmen

The latest in a series of email extortion campaigns promises its victims will be executed by a hitman if a Bitcoin ransom of $4,000 isn’t paid within 38 hours. Given such poorly executed scare tactics, it comes as no surprise that the payment account has still not received any funds after several days. Hopefully, as the threats of violence leads to victims contacting law enforcement rather than paying the scammers, these types of scams will become more rare.

Hackers Force Printers to Spam PewDiePie Message

Nearly 50,000 printers around the world have been spamming out a message suggesting subscribing to PewDiePie on YouTube and recommending the recipient improve their printer security. The group behind the spam has stated they want to raise awareness of the real threat of unsecured devices connected to the internet and how they can be used maliciously. In addition to sending print-outs, attackers could also steal data being printed or modify documents while they are being printed.

Cybersecurity Audit Shows Major Vulnerabilities in U.S. Missile Systems

A recent report showed that U.S. ballistic missile defense systems have consistently failed security audits for the past five years. Some of the major flaws included a lack of encryption for data stored on removable devices, patches reported in previous years that remained untouched, and the regular use of single-factor authentication for entire facilities. Physical security issues that could leave highly-sensitive data exposed to anyone willing to simply try to access it were also detailed in the report.

Touch ID Used to Scam Apple Users

Two apps were recently removed from the Apple App Store after several users reported being charged large sums of money after installing the app and scanning their fingerprint. Both apps were fitness-related and had users scan their fingerprint immediately so they could monitor calories or track fitness progress. But the apps launched a payment confirmation pop-up with the user’s finger still on the device to charge any card on file for the account. Luckily, the apps were only available for a brief period before being removed and refunds issued.

Signet Jewelers Expose Customer Order Data

Signet Jewelers, the parent company for Kay and Jared jewelers, was informed last month by an independent researcher of a critical flaw in their online sites. By simply altering the hyperlink for an order confirmation email, the researcher was able to view another individual’s order, including personal payment and shipping information. While Signet resolved the issue for future orders, it took additional weeks to remedy the flaw for past orders.

WeChat Ransomware Hits over 100k Chinese Computers

In the five days since December began, a new ransomware variant dubbed WeChat Ransom has been spreading quickly across China. With over 100,000 computers currently infected and thousands more succumbing each day, WeChat has made a significant mark. Though it demands a ransom of only roughly $16 USD, the variant quickly begins encrypting the local environment and attempts to steal login credentials for several China-based online services. Fortunately, Tencent banned the QR code being used to send ransom payments and disabled the account tied to it.

Nearly 100 Million Users Compromised in Quora Breach

Servers containing sensitive information for nearly 100 million Quora.comusers were recently compromised by unknown hackers. In addition to personal information about users, any posts or messages sent over the service were also breached. While informing affected users of the leak, Quora stated that all password data they store was fully encrypted using bcrypt, which makes it considerably more expensive and time-consuming for the hackers to break the algorithms and obtain the data. 

Marriott Hotels Breach Leaves Half a Billion Users Vulnerable

In one of the largest data breaches to date, Marriott International is under fire for exposing the personal data of nearly 500 million individuals. A class-action lawsuit has been filed against the hotel chain. For many victims, their names, home addresses, and even passport information was available on an unsecured server for nearly four years after the company merged with Starwood, whose reservation systems were already compromised.

Infowars Online Site Compromised by MageCart Attack

Earlier this week, a security researcher found payment card-stealing scripts running on the Infowars online site. The scripts managed to stay active for nearly 24 hours. At least 1,600 users of the site may have been affected during this period, though many were returning customers who wouldn’t have had to re-enter their payment information into the compromised forms. As of writing, the malicious scripts being used by Magecart are active on nearly 100 other online stores, with almost 20% getting re-infected within a two-week period.

Scammers Syphon €19 Million From French Film Company

A lawsuit recently revealed that savvy scammers successfully took nearly €19 million through a series of unauthorized transfers from a spoofed personal email address of the company’s CEO. After requesting additional information from the scammers, who continued to provide highly-detailed documents suggesting their legitimacy, several payments were transferred from the company’s main cash pool with promises of a quick payback from the scammers.

Chinese Headmaster Caught Cryptomining on School’s Systems

The headmaster of a Chinese school was fired after staff discovered an excessively high power bill previously written off as a faulty HVAC system was actually caused by several cryptomining rigs running off the school’s electricity. The headmaster brought the mining machines into the school in mid-2017 and evaded blame for the excess power consumption until the physical proof was discovered. While it appears no other harm was done, cryptomining software can be dangerous, as you can never be sure nothing else is bundled with it.

New Botnet Exploits Unpatched Bug in Over 100,000 Devices

Researchers have been monitoring a relatively new botnet that is currently controlling over 100,000 devices, including 116 device types from multiple manufacturers. By taking advantage of well-known bugs within Universal Plug n Play, hackers can quickly take control of the device and begin monitoring traffic from outside of the network.

Cathay Pacific Airlines Cyberattack Occurred Over Several Months

After originally claiming a data breach had taken place last month, affecting 9.4 million customers, new findings have shown the attacks have been happening regularly since March. Even though local laws didn’t require the company to notify authorities regarding a data breach, it is still surprising that it has taken almost nine months to determine what data had been exposed and what hadn’t.

You’re probably familiar with some of the most common requirements for creating passwords. A mix of upper and lowercase letters is a simple example. These are known as password constraints. They’re rules for how you must construct a password. If your password must be at least eight characters long, contain lower case, uppercase, numbers and symbol characters, then you have one length, and four character set constraints.

Password constraints eliminate a number of both good and bad passwords. I had never heard anyone ask “how many potential passwords, good and bad, are eliminated?” And so I began searching for the answer. The results were surprising. If you want to know the precise number of possible 8-character passwords there are if all of the character sets must be used, then the equation looks something like this.

A serious limitation of this approach is that it tells you nothing about the effects of each constraint alone or relative to other constraints. (I’m also not sure if there were supposed to be four consecutive ∑s or if the mathematician was stuttering.)

We choose to use a Monte Carlo simulation to analyze the mathematical impact of the various combinations of constraints. A Monte Carlo simulation uses a statistical analysis approach that provides a close approximation of the answer, while also providing the flexibility to quickly and easily measure the impact of each constraint and combination of constraints.

A look at minimum length limits

To start, let’s look at the impact of an eight-character length constraint alone. There are 95^8 possible combinations of 8 characters. 26 uppercase letters + 26 lowercase letters + 10 numerals + 33 symbols = 95 characters. For a length of 8 characters, we have 95˄8 possible passwords.

If a password must be at least 8 characters long, then there are also about 70.6 trillion otherwise viable passwords you are not allowed to use (95+(95^2 ) +(95^3 ) +(95^4 ) +(95^5)+(95^6 )+(95^7)). That’s a good thing. It means you can’t use 95 one character passwords, 9,025 two character passwords, and so on. Almost 70 trillion of those passwords you cannot use are seven characters long. This is a great and wholly intended effect of a password length constraint.

The problem with a lack of constraints is that people will use a very small set of all possible passwords, which invariably includes passwords that are incredibly easy to guess. In the analysis of over one million leaked passwords, it was found that 30.8 percent passwords eight to 11 characters long contained only lowercase letters, and 43.9 percent contained only lowercase letters and numbers.  In fact, to perform a primitive brute force attack against an eight-character password containing only lower case letters, it’s only necessary to try about 209 billion character combinations. That does not take a computer very long to crack. And, as we know from analyzing large numbers of passwords, it’s likely to contain one of the most popular ten thousand passwords.

To beef up security, we begin to add character constraints. But, in doing so, we decrease the number of possible passwords; both good and bad.

Just by requiring both uppercase and lowercase letters, more than 15 percent of all possible 8-character combinations have been eliminated as possible passwords. This means that 1QV5#T&|cannot be a password because there are no lowercase letters. Compared to Darnrats,which meets the constraint requirements, 1QV5#T&|is a fantastic password. But you cannot use it. Superior passwords that cannot be used are acceptable collateral damage in the battle for better security. “Corndogs” is acceptable, but “fruit&veggies” is not. This clearly is not a battle for lower cholesterol.

As constraints pile up, possibilities shrink

If a password must be exactly eight characters long and contain at least one lower case letter, at least one uppercase letter and at least one symbol, we are getting close to one-in-five combinations of 8 characters that are not allowable as passwords. Still, the effect of constraints on 12 and 16 character passwords is negligible. But that is all about to change… you can count on it.

Are you required to use a password that is at least eight characters long, has lower and uppercase letters, number and symbols? Just requiring a number to be part of a password removes over 40 percent of 8-character combinations from the pool of possible passwords. Even though you can use lowercase and uppercase letters, and you can use symbols, if one of the characters in your password must be a number then there are far fewer great passwords that you can use. If a 16 character long password must have a number, then 13 times more potential passwords have become illegal as a result of that one constraint than the combined constraints of lower and uppercase letters and symbols caused. More than one-in-four combinations of 12 characters can no longer become a passwords either.

You might have noticed that there is little effect on the longer passwords. Frequently there is also very little value in imposing constraints on long passwords. This is because each additional character in a password grows the pool of passwords exponentially. There are 6.5 million times as many combinations of 16 character pass words using only lowercase letters than there are of eight character passwords using all four character sets. That means that “toodlesmypoodles” is going to be a whole lot harder to crack than “I81B@gle”

Long and simple is better than short and hard

People tend to be very predictable. There are more symbols (than there are in any other characters set. Theoretically that means that symbols are going to do the most to make a password strong, but 80 percent of the time it is going to be one of the top five most frequently used symbols, and 95 percent of the time is will be one of the top 10 most frequently used symbols.

Analysis of two million compromised passwords showed that about one in 14 passwords start with the number one, however for those that started with the number one, 75 percent of them ended with a number as well.

The use of birthdays and names, for example, make it much easier to quickly crack many passwords.

Password strength: It’s length, not complexity that matters

As covered above, all four character sets (95 characters) in an eight character password allow for about 6.634 quadrillion different password possibilities. But a 16 character password with only lowercase letters has about 43.8 sextillion possible passwords. That means that there are well over 6.5 million times more possible passwords for 16 consecutive lowercase letters than for any combination of eight characters regardless of how complex the password is.

My great password is “cats and hippos are friends!”, but I can’t use it because of constraints – and because I just told you what it is.

For years password experts have been advocating for the use of simple passphrases over complex passwords because they are stronger and simpler to remember. I’d like to throw a bit of gasoline on to the fire and tell you, those 95^8 combinations of characters are only  half that many when you tell me I have to use uppercase, lowercase, numbers, and symbols.