What is a Common Indicator of a Phishing Attempt? | 9 Key Signs

Every day, roughly 3.4 billion phishing emails land in inboxes worldwide, and it only takes one click to compromise an entire organization. But what is a common indicator of a phishing attempt, and how can you spot one before it’s too late?

Phishing is a type of cyberattack where an attacker sends a fraudulent message. Usually an email, it’s disguised as a communication from a legitimate sender, with the intent to steal sensitive information or cause financial harm.

In this guide, we’ll break down the most common signs of phishing, explore the different types of phishing attempts, and share actionable strategies to keep you and your organization safe.

What is Phishing?

Phishing is a type of cyberattack where criminals impersonate legitimate organizations, businesses, or individuals to trick victims into revealing sensitive information such as passwords, credit card numbers, or personal data. These attacks typically occur through email, but can also happen via text messages, phone calls, or fake websites.

The primary goal of phishing is to steal credentials, financial information, or gain unauthorized access to systems and networks. For businesses, phishing attacks can lead to data breaches, financial losses, regulatory violations, and significant damage to brand reputation.

Types of Phishing Attacks

Phishing attacks come in many forms, and each one uses a different approach to deceive victims. Some target individuals, others focus on businesses, and many are tailored to look as legitimate as possible. Knowing the main types of phishing attacks makes it easier to recognize suspicious messages and avoid falling for them:

• Email Phishing: It involves fraudulent emails that appear to come from legitimate sources like banks, social media platforms, or business partners.
• Spear Phishing: Highly targeted attacks aimed at specific individuals or organizations, often using personal information to increase credibility and success rates.
• Whaling: A form of spear phishing that specifically targets high-profile executives, CEOs, or other senior leadership within organizations.
• Smishing (SMS Phishing): Phishing attacks conducted through text messages, often containing malicious links or requesting sensitive information via reply.
• Vishing (Voice Phishing): Phone-based attacks where criminals impersonate legitimate organizations to extract sensitive information over the phone.
• Clone Phishing: Attacks that replicate legitimate emails but replace links or attachments with malicious versions, often sent from compromised accounts.

Suggested read: What is AI Phishing? A Guide To Emerging Cyber Threats

Common Indicators of a Phishing Attempt

Recognizing the signs of phishing is your first line of defense against these attacks. Phishing indicators include urgent language, suspicious sender email addresses, generic greetings, unexpected links or attachments, poor grammar, and requests for sensitive personal information.

Let’s break down each common indicator of a phishing attempt in detail.

1. Suspicious sender addresses

One of the first things to check when you receive an unexpected email is the sender’s address.

Phishing attempts often use email addresses that are unfamiliar or contain subtle misspellings of legitimate domains. For example, you might receive a message from “[email protected]” instead of “[email protected].”

These slight variations are easy to miss at a glance, which is exactly what scammers count on. If the email domain doesn’t match the supposed sender’s organization, treat it as a red flag.

2. Urgent or threatening language

Scams exploit human psychology by creating a sense of urgency or fear to prompt quick action from victims. Phishing messages might warn you that your account will be suspended, your payment has failed, or unauthorized activity has been detected; all demanding immediate action. This pressure is deliberate.

Phishing emails frequently contain urgent requests that pressure recipients to bypass normal verification procedures, increasing the likelihood of success for the scammer. If an email makes you feel like you must act right now, pause and verify.

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3. Generic greetings

Legitimate organizations that you have an account with typically address you by name.

Phishing emails, on the other hand, often contain unusual or generic greetings like “Dear Customer,” “Dear User,” or “Dear Account Holder” that differ from the sender’s usual style.

While a generic greeting alone doesn’t confirm a phishing attempt, it’s a strong signal, especially when paired with other indicators on this list.

Suggested read: Why is Phishing So Effective?

4. Poor grammar and spelling errors

Phishing emails frequently contain grammatical or spelling errors that are not typical of legitimate communications.

Professional organizations invest in polished, error-free messaging. So when you notice awkward phrasing, broken sentences, or obvious typos, it’s a common indicator of a phishing attempt.

Scammers often operate from different regions and may rely on translation tools, which can result in unnatural language.

5. Suspicious attachments

If you receive an email with an attachment you weren’t expecting, proceed with caution. Unexpected attachments in phishing emails, particularly those with unusual file extensions or types like .exe, .zip, or .scr, are red flags for potential malware.

Opening these files can install malicious software on your device, giving attackers access to your data or systems. Never open an attachment unless you can verify its legitimacy with the sender through a separate, trusted channel.

6. Suspicious links

Phishing attacks frequently rely on deceptive links to redirect victims to fake websites designed to steal credentials or personal data. Hovering over links in emails may reveal a different, non-legitimate URL, which is a common tactic in phishing scams.

For instance, a link might display “www.yourbank.com” but actually direct you to “www.y0urbank-login.com.” Always hover before you click, and when in doubt, navigate to the website directly through your browser instead of using the link provided.

7. Requests for sensitive information

Requests for sensitive information, such as passwords, credit card numbers, Social Security numbers, or login credentials, are a strong indicator of phishing. Legitimate organizations will rarely (if ever) ask you to share such details over email.

Phishing attempts often use social engineering tactics to manipulate individuals into revealing this information, sometimes by impersonating trusted sources or authority figures to gain the victim’s trust and encourage compliance.

8. Too-good-to-be-true offers

Phishing emails may include offers that seem too good to be true, such as lottery winnings, unexpected refunds, or exclusive deals that require immediate action.

These offers are designed to exploit human emotions like curiosity and excitement, tricking individuals into clicking a link or providing personal details. If an offer sounds too good to be true, it almost certainly is.

Suggested read: Email Phishing and DMARC Statistics: Security Trends

9. Unusual requests outside normal processes

Finally, unusual requests that deviate from normal business processes are often a sign of phishing attempts.

For example, an email from a “colleague” asking you to urgently wire funds or share confidential files outside of established protocols should raise immediate suspicion. Phishing attacks often exploit urgency and authority to trick recipients into taking immediate action without verifying the legitimacy of the request.

Always confirm such requests through known official channels before taking any action.

Real-World Phishing Attack Examples

Phishing attacks have caused devastating financial and reputational damage to some of the world’s biggest organizations. These real-world examples show just how effective phishing attempts can be when they exploit human trust and authority.

FACC: $47 million CEO fraud

In 2016, Austrian aerospace manufacturer FACC, a supplier to Airbus and Boeing, lost approximately €42 million (roughly $47 million) after a cybercriminal impersonated CEO Walter Stephan via email.

The attacker had broken into the company’s email server and studied the CEO’s writing habits to craft a convincing message requesting an urgent funds transfer for a fake acquisition project. An employee in the finance department, unable to detect the fraud, complied.

FACC managed to recover about €10.9 million, but the damage was done: the company’s share price dropped significantly, and both the CEO and CFO were fired in the aftermath.

Facebook and Google: $122 million supplier scam

Between 2013 and 2015, Lithuanian national Evaldas Rimasauskas orchestrated one of the largest phishing scams in history by impersonating Quanta Computer, a legitimate Taiwanese hardware manufacturer that both Facebook and Google did business with.

Rimasauskas registered a fake company under the same name in Latvia, opened fraudulent bank accounts, and sent phishing emails with forged invoices, contracts, and corporate seals to employees at both tech giants.

The scheme netted approximately $99 million from Facebook and $23 million from Google. Rimasauskas was arrested in 2017, extradited to the U.S., and sentenced to five years in prison.

Sony Pictures: Data breach via Spear Phishing

In November 2014, a hacking group calling itself the “Guardians of Peace”, later attributed to North Korea by the FBI, breached Sony Pictures Entertainment’s network using spear phishing emails to capture employee credentials.

The attackers deployed destructive malware that erased data from company servers and leaked a massive trove of confidential information, including unreleased films, private executive emails, employee Social Security numbers, salary data, and future business plans.

The breach caused an estimated $15 million in immediate remediation costs and significant reputational damage. In 2018, the U.S. Department of Justice charged North Korean programmer Park Jin Hyok for his role in the attack.

How to Identify and Prevent Phishing

The best defense to phishing attacks is staying alert and practicing safe online habits. By following these key tips, you can greatly reduce the risk of falling victim to identity theft and data breaches:

• Verify sender identity: Always double-check the sender’s email address and confirm the source through official channels before clicking links or downloading attachments, especially for business-critical communications.
• Enable multi-factor authentication (MFA): Even if your password is stolen, MFA adds an extra layer of security that makes it harder for attackers to gain access to organizational systems and sensitive data.
• Use email authentication protocols: Organizations should implement security measures like SPF, DKIM, and DMARC. These prevent spoofed emails from reaching employee inboxes and protect against domain impersonation.
• Report suspicious emails: If something seems off, report it to your IT or security team instead of ignoring or deleting it. This helps build organizational awareness and improves threat detection.
• Stay educated: Regular phishing awareness training keeps you and your team up to date on the latest tactics and how to respond safely, reducing the risk of successful attacks across your organization.

Eliminate Phishing Threats with PowerDMARC

You’ve just learned how recognizing common phishing indicators and adopting safe habits can greatly reduce your risk. But in a business setting, even just one mistake can let a phishing attack slip through and compromise your entire organization’s security posture.

At PowerDMARC, we help organizations combat phishing by implementing a zero trust security model via a combination of DMARC, SPF, and DKIM protocols, which help your business verify who an email’s sender is before allowing it through your servers.

Here’s what we bring to the table:

• Instant deployment with cloud-based dashboard for immediate threat visibility
• Advanced analytics and DMARC reporting for comprehensive email security insights
• Ongoing compliance monitoring (SOC2, ISO27001, GDPR) for regulated industries
• 24/7 expert support from certified email security professionals

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Frequently Asked Questions (FAQs)

1. What acronym can be used to help you remember phishing indicators?

Use SLAM: Sender (check who it’s from), Links (hover before clicking), Attachments (be careful with files), and Message (watch for urgency or errors).

2. What happens if you click on a phishing link but did not enter details?

The risk is lower if no information was entered, but malware could still be involved. Run an antivirus scan, update your device, and report it if it was on a work system.

3. What is a likely indicator of a phishing attack?

A likely indicator of a phishing attack is an email that creates artificial urgency, such as claiming your account will be suspended unless you act immediately, combined with poor grammar or suspicious sender addresses that don’t match the supposed organization.

4. What is the most common phishing attempt?

The most common phishing attempt is fake security alerts from banks or financial institutions, claiming suspicious activity on your account and requesting immediate verification of personal information or login credentials through a malicious link.

5. What are the five main types of phishing attacks?

The main types are email phishing (fake emails), spear phishing (targeted attacks), smishing (texts), vishing (phone calls), and clone phishing (copied legitimate emails with malicious changes).

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Ahona Rudra

Domain & Email Security Expert at PowerDMARC

Ahona is the Marketing Manager at PowerDMARC, with 5+ years of experience in writing about cybersecurity topics, specializing in domain and email security. Ahona holds a post-graduation degree in Journalism and Communications, solidifying her career in the security sector since 2019.

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