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Below is an article related to Social Engineering and how to protect your systems.
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We have become all too familiar with the type of attacker who leverages their technical expertise to infiltrate protected computer systems and compromise sensitive data. We hear about this breed of hacker in the news all the time, and we are motivated to counter their exploits by investing in new technologies that will bolster our network defenses.
However, there is another type of attacker who can use their tactics to skirt our tools and solutions. They are the social engineers, hackers who exploit the one weakness that is found in each and every organization: human psychology. Using a variety of media, including phone calls and social media, these attackers trick people into offering them access to sensitive information.

Social engineering is a term that encompasses a broad spectrum of malicious activity. For the purposes of this article, however, we will focus on the five most common attack types that social engineers use to target their victims: phishing, pretexting, baiting, quid pro quo and tailgating.

1. Phishing
Phishing scams might be the most common types of social engineering attacks used today. So what is phishing exactly? Most phishing scams demonstrate the following characteristics:

Seek to obtain personal information, such as names, addresses and social security numbers.
Use link shorteners or embed links that redirect users to suspicious websites in URLs that appear legitimate.
Incorporates threats, fear and a sense of urgency in an attempt to manipulate the user into acting promptly.
Some phishing emails are more poorly crafted than others to the extent that their messages oftentimes exhibit spelling and grammar errors but these emails are no less focused on directing victims to a fake website or form where they can steal user login credentials and other personal information.

A recent scam sent phishing emails to users after they installed cracked APK files from Google Play Books that were pre-loaded with malware. This specific phishing campaign demonstrates how attackers commonly pair malware with phishing attacks in an effort to steal users’ information.

2. Pretexting
Pretexting is another form of social engineering where attackers focus on creating a good pretext, or a fabricated scenario, that they can use to try and steal their victims’ personal information. These types of attacks commonly take the form of a scammer who pretends that they need certain bits of information from their target in order to confirm their identity.

More advanced attacks will also try to manipulate their targets into performing an action that enables them to exploit the structural weaknesses of an organization or company. A good example of this would be an attacker who impersonates an external IT services auditor and manipulates a company’s physical security staff into letting them into the building.

Unlike phishing emails, which use fear and urgency to their advantage, pretexting attacks rely on building a false sense of trust with the victim. This requires the attacker to build a credible story that leaves little room for doubt on the part of their target.

Pretexting attacks are commonly used to gain both sensitive and non-sensitive information. Back in October, for instance, a group of scammers posed as representatives from modeling agencies and escort services, invented fake background stories and interview questions in order to have women, including teenage girls, send them nude pictures of themselves.

3. Baiting
Baiting is in many ways similar to phishing attacks. However, what distinguishes them from other types of social engineering is the promise of an item or good that hackers use to entice victims. Baiters may offer users free music or movie downloads, if they surrender their login credentials to a certain site.

Baiting attacks are not restricted to online schemes, either. Attackers can also focus on exploiting human curiosity via the use of physical media.

One such attack was documented by Steve Stasiukonis, VP and founder of Secure Network Technologies, Inc., back in 2006. To assess the security of a financial client, Steve and his team infected dozens of USBs with a Trojan virus and dispersed them around the organization’s parking lot. Curious, many of the client’s employees picked up the USBs and plugged them into their computers, which activated a keylogger and gave Steve access to a number of employees’ login credentials.

4. Quid Pro Quo
Similarly, quid pro quo attacks promise a benefit in exchange for information. This benefit usually assumes the form of a service, whereas baiting frequently takes the form of a good.

One of the most common types of quid pro quo attacks involve fraudsters who impersonate IT service people and who spam call as many direct numbers that belong to a company as they can find. These attackers offer IT assistance to each and every one of their victims. The fraudsters will promise a quick fix in exchange for the employee disabling their AV program and for installing malware on their computers that assumes the guise of software updates.

It is important to note, however, that attackers can use much less sophisticated quid pro quo offers than IT fixes. As real world examples have shown, office workers are more than willing to give away their passwords for a cheap pen or even a bar of chocolate.

5. Tailgating
Another social engineering attack type is known as tailgating or “piggybacking.” These types of attacks involve someone who lacks the proper authentication following an employee into a restricted area.

In a common type of tailgating attack, a person impersonates a delivery driver and waits outside a building. When an employee gains security’s approval and opens their door, the attacker asks that the employee hold the door, thereby gaining access off of someone who is authorized to enter the company.

Tailgating does not work in all corporate settings, such as in larger companies where all persons entering a building are required to swipe a card. However, in mid-size enterprises, attackers can strike up conversations with employees and use this show of familiarity to successfully get past the front desk.

In fact, Colin Greenless, a security consultant at Siemens Enterprise Communications, used these same tactics to gain access to several different floors, as well as the data room at an FTSE-listed financial firm. He was even able to base himself in a third floor meeting room, out of which he worked for several days.

Social Engineering Recommendations
Hackers who engage in social engineering attacks prey off of human psychology and curiosity in order to compromise their targets’ information. With this human-centric focus in mind, it is up to users and employees to counter these types of attacks.

Here are a few tips on how users can avoid social engineering schemes:

Do not open any emails from untrusted sources. Be sure to contact a friend or family member in person or via phone if you ever receive an email message that seems unlike them in any way.
Do not give offers from strangers the benefit of the doubt. If they seem too good to be true, they probably are.
Lock your laptop whenever you are away from your workstation.
Purchase anti-virus software. No AV solution can defend against every threat that seeks to jeopardize users’ information, but they can help protect against some.
Read your company’s privacy policy to understand under what circumstances you can or should let a stranger into the building.