스팸가드 - 스미싱 문자 차단·부모님 피싱 예방

SpamGuard is a smishing blocking app that determines whether a text message is fraudulent within 0.1 seconds right on your phone, without sending the content to a server. It works even when the internet is turned off or in airplane mode.

■ Why SpamGuard?

Many existing spam blocking apps copy text messages to a server for verification. SpamGuard does not send the original text, the sender's number, or any links anywhere. The detection engine is built into the app, so your messages never leave your phone.

■ How It Blocks

· It detects messages immediately when a new notification appears in your messaging app (Samsung Messages, Google Messages, etc.)

· For dangerous messages, it hides the original notification and changes it to a "Dangerous message hidden" warning

· For ambiguous messages, it notifies you with "This message requires verification"

· Links are blocked from being clicked within the app

■ We Explain Why It Is Dangerous

We don't just block messages like a dash cam. We show you the reasons why you were caught in a list of categories. · Shortened URLs — Addresses that hide the real destination

· Uses an organization name but is not an official address — e.g., courier company name + fake address

· Numerical addresses, address endings frequently used in scams

· App installation file (APK) links, requests to install remote control apps

· Requests for verification codes, passwords, or ID photos

· Requests to send money to an account, requests for gift certificate numbers

· Requests to call a 010 or 070 personal number while mentioning an organization name

· Text messages sent from overseas, messages with split letters like 'National Tax Service'

■ We catch these types of messages

· Impersonating courier services: Address discrepancies, unpaid customs duties, failed deliveries, redelivery

· Impersonating government agencies: Prosecution Service, Police, Financial Supervisory Service, National Tax Service refunds, health insurance, fines

· Impersonating family or acquaintances (Messenger phishing): "Mom, my phone screen is broken, text this number" — We catch them even without links

· Links to obituaries, wedding invitations, or first birthday party invitations

· Inducing phone calls via text messages approving overseas payments or micropayments Advertisements for government-supported loans and low-interest refinancing

· Casino, sports betting, stock trading rooms, and inducements for guaranteed-profit investments

■ False positives in one tap

If a text message from a financial institution or credit card company is mistakenly blocked, a single "This is a safe message" will immediately add that number to the safe list, ensuring it will not be blocked in the future. Official addresses from banks, credit card companies, and courier services are reflected as safety signals to reduce false positives.

■ Choose your blocking level

· Strong — Hides suspicious messages (Recommended for parents' phones)

· Standard — Hides only confirmed scam messages and sets ambiguous ones to "Caution"

· Weak — Hides only when absolutely certain

■ Manual text scanning

Long-press a suspicious message to select "Share → SpamGuard" or paste it to immediately identify it. Scanned content is not saved.

■ Protect your parents' phones (Family Protection)

If you install SpamGuard on your parents' phones and enter the connection code in the Family tab, you will be notified on your phone when a dangerous message arrives on theirs. Only the risk type, risk level, and time are transmitted; the text message content and number are not transmitted. Connecting to your parents' phone is free.

■ Pricing

· Free: Unlimited text message detection and blocking, warning signal explanation, blocked, false positive/spam reporting, manual scanning — no feature limitations

· Premium: 2,900 KRW/month / 29,000 KRW/year: Ad removal, 3-generation family protection, caller reputation (pre-filters numbers reported by multiple users), weekly reports

You can cancel your subscription at any time on Google Play, and detection and blocking will not stop even after the subscription ends. The free version displays ads, but they do not appear on warning or detection screens, and text message content is not included in ad requests. The Premium version is ad-free.

■ Permissions Guide

· Notification access (Required): Used to identify the sender and content of text message app notifications within the phone. Notifications from other apps are ignored immediately upon reading and are not saved.

· Notifications (Optional): Used to notify you when a dangerous text message has been hidden.

· SMS read, receive, and send permissions are not used. Text messages are not deleted, and hidden messages remain in the messaging app.

■ Personal Information

Identification records are stored only on this phone and are automatically deleted after a set period (7, 30, or 90 days). You can perform a one-time complete data deletion in the settings. Spam report sharing is off by default; if turned on, it sends the reported number as an irreversible hash.

■ If You Receive a Scam Text Message

You can call 112 (National Police Agency), 1332 (Financial Supervisory Service), or 118 (Illegal Spam Response Center) directly from within the app, and we provide countermeasures for each scam method.

■ Frequently Asked Questions

Q. Does this work with KakaoTalk? — If enabled in settings, it also checks for links, app installations, and verification code requests in KakaoTalk notifications.

Q. What if I receive a legitimate text message? — If you press "This is a safe message," the number will not be blocked again.

Q. What about new scam methods? — Identification rules are added from the server without app updates. Only the rules are downloaded, and no text messages are sent.

■ Notice

SpamGuard is a security aid and does not guarantee that it blocks all fraudulent text messages. It does not replace professional security or legal consultation. Please verify any text messages requesting money or personal information directly by calling the organization's official number.

Ages 14 and up · Privacy Policy https://spamguard.justgets.com/privacy · Contact [email protected]