B

PhishGuard: Real-Time Phishing Link Detector

3.15

Derivation Chain

Step 1 Recurring scam patterns targeting tech workers
→
Step 2 Phishing/scam URL detection service

Problem

Even IT professionals are repeatedly falling for sophisticated phishing links (fake SaaS login pages, fake open-source donation pages, fake job offers, etc.). In Korea specifically, phishing links distributed via KakaoTalk and Telegram bypass traditional email security filters, and post-fraud credit card refund processes take an average of 2-4 weeks.

Solution

When a URL shared via KakaoTalk, Telegram, or Slack is submitted through copy-paste or the share function, the service: (1) instantly analyzes domain creation date, SSL certificate, and WHOIS information, (2) cross-references known phishing databases (PhishTank, OpenPhish), and (3) returns a page screenshot with highlighted risk factors—all within 3 seconds.

Target: IT company employees (ages 25-50), security leads at small IT teams (5-30 people), Freelancer developers
Revenue Model: Premium: Free (30 lookups/month) / Pro $14/month (unlimited lookups, API key, Slack bot integration) / Team $37/month (team dashboard, phishing attempt analytics)
Ecosystem Role: Infrastructure
MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty
2.0/5
U Urgency
3.0/5
M Market
3.0/5
R Realizability
4.0/5
V Validation
3.0/5
NUMR-V Scoring System
N Novelty1-5How uncommon the service is in market context.
U Urgency1-5How urgently users need this problem solved now.
M Market1-5Market size and growth potential from proxy indicators.
R Realizability1-5Buildability for a small team with realistic constraints.
V Validation1-5Validation signal quality from competition and demand data.
Each dimension is scored 1-5 and weighted into grade S/A/B/C/D.
SaaS N=.15 U=.20 M=.15 R=.30 V=.20 Senior N=.25 U=.25 M=.05 R=.30 V=.15

Feasibility (70%)

Tech Complexity
32.0/40
Data Availability
17.5/25
MVP Timeline
20.0/20
API Bonus
0.0/15
Feasibility Breakdown
Tech Complexity/ 40Difficulty of core implementation stack.
Data Availability/ 25Practical availability and cost of required data.
MVP Timeline/ 20Expected time to ship a usable MVP.
API Bonus/ 15Bonus for viable public API leverage.
Total 100 points; below 50% is filtered out.

Market Validation (50/100)

Competition
8.0/20
Market Demand
6.2/20
Timing
14.0/20
Revenue Signals
7.5/15
Pick-Axe Fit
7.5/15
Solo Buildability
7.0/10
Validation Breakdown
Competition/ 20Signal quality from competitor landscape.
Market Demand/ 20Demand proxies from search and mention patterns.
Timing/ 20Fit with current shifts in tech, behavior, and regulation.
Revenue Signals/ 15Reference evidence for monetization viability.
Pick-Axe Fit/ 15How well the concept serves participants in a trend.
Solo Buildability/ 10Practicality for lean-team implementation.
Total 100 points; below 50 is filtered out.

Technical Requirements

Backend [medium] Frontend [low]
Dashboard