Phishing remains the most commonly reported cybercrime, and for fraud teams it deserves particular attention because it’s so often the first step in a larger scheme, not the end of one. A successful phishing message hands a fraudster the credentials, the one-time passcode, or the trust needed to move straight into account takeover. Knowing the signs, both the ones a customer might spot in their inbox and the ones a fraud team can detect downstream, closes that gap earlier.
What is phishing?
Phishing is a social engineering tactic in which a fraudster impersonates a trusted person or organization to trick a victim into revealing credentials, payment details, or other sensitive information, or into taking an action, such as clicking a malicious link, that compromises their account or device. It typically arrives by email, but the same tactic shows up as text messages (smishing), voice calls (vishing), and direct messages on social media.
The FBI’s Internet Crime Complaint Center (IC3) recorded 191,561 phishing and spoofing complaints in 2025, making it one of the largest categories the agency tracks by volume, and business email compromise, a close cousin of phishing that specifically targets organizations, generated roughly $3 billion in reported losses that same year. Keep in mind that those figures only represent what victims of phishing have reported, so the actual volume of phishing attempts is certainly much higher.
Common signs of a phishing email
A few signals show up across most phishing attempts, and both consumers and fraud teams benefit from recognizing them.
A sense of urgency is one of the most reliable indicators. Messages that claim an account will be suspended, a payment has failed, or a security issue needs immediate attention are designed to cause rash thinking and decisions. According to guidance from the Cybersecurity and Infrastructure Security Agency (CISA), urgent or emotionally appealing language, especially messages threatening dire consequences for not responding right away, is one of the clearest warning signs of a phishing attempt.
A mismatched or suspicious sender address is another common tell. A message claims to be from a bank or a well-known company but is sent from a generic or slightly altered domain, instead of the organization’s actual domain, is a strong indicator that the message is not what it claims to be.
Requests for sensitive information delivered through the message itself, like a login page that’s linked directly from an email instead of the organization’s actual website, or a request to confirm a password, Social Security number, or payment card number by reply, are a near-universal red flag. Legitimate organizations will very rarely ask for this type of information through an inbound message.
Generic greetings and inconsistent branding, like “Dear Customer” instead of a name the sender should already know, or logos and formatting that look slightly off compared to the real organization’s communications, often indicate a mass phishing campaign rather than a targeted, legitimate message.
Unexpected attachments or links, especially ones that do not match the stated purpose of the message, are common delivery vehicles for credential-harvesting pages or malware.
How phishing leads to account takeover
For fraud teams, the reason phishing matters extends well past the initial email. A successful phishing attempt frequently hands a fraudster exactly what is needed to compromise an account directly, whether that is a password, a one-time passcode captured through a fake login page, or, increasingly, a real-time relay of a multi-factor authentication (MFA) prompt through an adversary-in-the-middle technique.
Once a fraudster has valid credentials, the resulting account takeover often looks like ordinary user activity to systems that only monitor for known attack signatures. That is why fraud teams should treat phishing prevention and account takeover detection as connected problems rather than separate ones. A spike in phishing activity targeting a business’s customers is frequently a leading indicator of account takeover attempts that will follow in the days after.
Phishing detection signals fraud teams should monitor
Beyond educating customers, fraud teams have their own set of signals to watch for on the back end.
Login attempts shortly after a customer reports receiving a suspicious message, or shortly after a known phishing campaign targeting the business’s brand has been identified, deserve heightened scrutiny.
Account changes that follow an unfamiliar login closely, such as an updated email address, phone number, or payment method, are a common pattern after a phishing-enabled account takeover, since fraudsters typically move quickly to lock out the legitimate owner and establish control before it is noticed.
Device and behavioral mismatches, including a login from a device or location the account has never used before, paired with unusually fast navigation through account settings, often distinguish a fraudster who already knows exactly what they are looking for from a legitimate user browsing normally.
Reports of impersonation, including fake versions of a business’s own login pages or customer support channels, should be tracked and acted on quickly, since brand impersonation sites are frequently reused across many victims before they are taken down.
What fraud teams and businesses can do about it
A layered response works better than any single control.
Email authentication protocols, including DMARC, SPF, and DKIM, make it harder for fraudsters to successfully spoof a business’s own domain, reducing the volume of convincing phishing messages sent under that brand’s name.
Customer education delivered at the right moment, rather than through a single generic notice, helps close the human gap. Sending out a specific warning at users’ login pages after a suspicious pattern has been detected tends to be a lot more effective than just a static help article a customer only encounters after damage is done.
Coordinating with account security monitoring helps to close the loop. Because phishing so often precedes account takeover, treating a confirmed phishing campaign as an early warning signal, and tightening authentication requirements for affected accounts in the days that follow, can help to catch attempts that would otherwise blend in with normal login activity.
Phishing isn’t likely going to disappear as a tactic, since it remains cheap to run and continues to work often enough to be worth a fraudster’s time. But if you recognize the signs early on and treat phishing detection as part of a broader account security program rather than a standalone email problem, you’ll help to give fraud teams a meaningfully earlier point to intervene.
If your fraud team is struggling with phishing or other fraudulent activities and is looking for an effective solution, consider trying out Sift. Learn more about how to stop account takeover.
Frequently asked questions
What is the most common sign of a phishing email?
Urgency is consistently one of the strongest signals. Messages pressuring a recipient to act immediately, often by threatening account suspension or a security problem, are designed to prevent the recipient from pausing to verify the message through another channel.
Can phishing happen outside of email?
Yes. Smishing (SMS-based phishing) and vishing (voice call-based phishing) use the same social engineering tactics through text messages and phone calls, and direct messages on social media platforms are an increasingly common delivery method as well.
How does phishing connect to account takeover?
Phishing is frequently the initial access method that leads to account takeover. A fraudster who successfully phishes a password, a one-time passcode, or a multi-factor authentication approval can use those credentials to log in and take control of an account, often before the legitimate owner realizes anything is wrong.
