social engineer – GW Information Security Blog

Phishing

Phishing is a very simple and useful tool in an attacker’s arsenal. Phishing can lead to the exposure of sensitive information such as usernames, passwords, PII (personally identifiable information), and credit card information. So what is Phishing? It is at method used to obtain sensitive information from a victim that leverages social engineering and communications technologies that normal people use every day. There are various methods of phishing, with the most common being email, vishing (voice phishing), and smshing (text phishing). These methods can be blanket attempts that rely on quantity instead of quality (often called campaigns) or they can be very carefully crafted attacks with very specific targets (spear phishing and whaling). Luckily, identifying and defeating these attacks can be simple if you know what to look out for.

Email Phishing

Email is the hacker’s go-to for most phishing attacks; people wouldn’t think twice about receiving an email. Often times phishing emails will contain a malicious link, a malware attachment, or directly ask for sensitive information. In order to trick victims, these emails are crafted to appear from a big company, such as FedEx, Apple, or even from inside your own organization. Attackers use look-a-like or spoof emails to convince the target the email is legitimate. This can lead to compromised systems and/or exposed personal information, which can lead to further exposure of friends, family, and the victim’s organization.

Defeating Email Phishing:

Is the company logo/banner/design slightly off?
Would this person/company normally be sending you an email?
Should they already have the information they are asking for?
Never open unsolicited attachments
Legitimate Companies should never ask sensitive information through email
Use other methods to confirm the communication

Vishing

Voice phishing is growing in popularity and just like other types of phishing, vishing can be automated making it a dangerous tool. Attack examples include an “FBI” automated message, “IRS” tax refund/payment notification, or as a call from your local home improvement company. When attackers get on the line with their target they present a well thought out and engaging backstory to hook their victims. Impersonation is used in most vishing calls; attackers will impersonate IT staff, management in your company, and HR to appear official.

Defeating Vishing:

Ask the caller to provide information only you and they would know to ensure the caller’s identity
Never give sensitive information over the phone
If the call is suspicious, contact someone close to the individual, or through other means
Offer to call the individual back at the number in your staff/corporate directory, or at the number listed on the legitimate website

Smshing

Smishing sends texts to the targets phone in hopes of them clicking a malicious link, downloading malware, or returning sensitive information. Texts follow email phishing outlines and can be identified similarly. Many victims fall for smishing because they are unaware of the tactic and more trusting of texts. Don’t trust it more just because it’s a text message.

Defeating Smshing

Never provide sensitive information over text message
Avoid following random links
If you are unsure, reach out to your security team, or the communicating company
Do not call the number that texted you

Spear-phishing, Whaling & Campaigns

Most individuals come into contact with phishing campaigns. The goal of campaigns are to reach as many people as possible and hope for a hit. Whereas, spear phishing and whaling are techniques aimed at selected groups of individuals and executives. These are well planned, crafted, and executed, and shouldn’t be taken lightly. They aim to compromise victims with privileged access to systems, accounts, and resources. Victims typically don’t have the time to review these carefully crafted emails highly specific to the target and fall for the trap.

Defeating Spear-phishing and Whaling

Report suspicious emails looking for information to security
Verify communication with the contact through other methods
Attackers often impersonate colleagues, friends, and family
Always assume you’re a target
Opt for face to face meetings when possible (online or in person)

What is Social Engineering?

We frequently hear about cyber-attacks on organizations using highly technical and sophisticated methods, involving malware and vulnerabilities that most people don’t understand. However, what we don’t typically hear about is how the attacker got in. According to Verizon’s Data Breach Investigation Report, in 2019, a third of all data breaches involved social engineering attacks to include phishing, pretexting, and a variety of other social engineering methods.

Social Engineering involves gaining the trust of unsuspecting users via manipulation or trickery, in order to gain unauthorized system access, credentials, or commit fraud. Attackers will attempt to take advantage of a multitude of psychological traits such as carelessness, curiosity, empathy, complacency, and most frequently ignorance.

Why does it Matter?

Social Engineering attacks are more common than you might think and odds are that you will encounter one yourself in some form or another. Failing to recognize a social engineering attack could range from a minor inconvenience to a life changing event. Compromise from such an attack could lead to needing a password reset to having a bank account drained of funds, or could even be the launching point for the next massive data breach that makes headlines worldwide.

The massive Target data breach of 2013, which exposed the credit card and personal information of 110 million people, was a result of a contractor falling for a phishing email, one of the many social engineering methods attackers use. The DNC email leak in 2016 was caused by a well-crafted but fake password reset request from Google; sent to a high ranking DNC official and resulting in the leak of highly sensitive information regarding the Democratic campaign.

Social Engineering is a large threat to the safety of not just large organizations, but also the individual.

Social Engineering Life Cycle

Much like software development and risk management, many cyber-attacks follow a lifecycle approach; with a continuing cycle of input and output constantly improving the process. Social engineering is no different and even has a few lifecycle models dedicated to it. In its simplest form however, the Social engineering lifecycle follows four basic phases: Investigation, Hook, Play, and Exit.

The Investigation phase is when an attacker performs their recon. They might choose their targets based on position within an organization, ease of access, or they might choose a wide range of targets just to see what sticks. After choosing a target they will use public information to learn as much as possible. Sources such as social media, company websites, and other profiles provide a wealth of information for attackers to use.

The Hook phase involves the initial interaction with the target; ranging from email to in person contact. During the hook, the attackers focus is on spinning a web of lies to manipulate victims at their will.

During the Play phase an attacker gains a stronger foothold and carries out the attack. Depending on their goals, they will begin disrupting or stealing sensitive and valuable data.

The Exit phase points to the end of the lifecycle. The Social Engineer will attempt to remove all traces of their presence and bring an end to their charade. Everything the attacker has gained or learned during the process is then used during a new attack cycle to more effectively con another victim.

Social Engineering and unaware users provide a vast attack surface that can be easily taken advantage of. Meaning that you need to do everything you can to be prepared for and protect yourself from the conmen of the internet age.