Fraud Detection System / Threat Operations Console

Neden: Bankacılık ödeme sistemlerinde gerçek zamanlı fraud tespiti. Saniyede 1000+ tx işleyebilen Kafka pipeline, XGBoost ML modeli ile velocity, geo-impossible travel, MCC mismatch kombinasyonu — false positive %3.2'nin altında. Stack: Apache Kafka · Python · XGBoost · Prometheus · Grafana. Şüpheli işlem 90ms içinde block, otomatik PDF rapor.

Kafka 3 brokerXGB v4.2FPR < 3.2%P95 < 90ms

Throughput

1247tx/s

peak today 2,140 · avg 1,180

Approved

99.42%

son 5dk: 12,381 tx

Flagged · Review

0.43%

son 5dk: 53 tx

Blocked · Confirmed Fraud

0.15%

korunan: ₺847,200

Live Threat Map · Geo Origin

son 60 dakikadaki block edilen işlemlerin kaynağı

live

347

blocked / 60min

incoming threatlocal processing

Active Anomalies

high-confidence detections

live

ML Score Histogram

last 5 min · 850 events

0.00.6 FLAG0.8 BLOCK1.0

Live Transaction Stream

tx.events · partition #0–11 · click to filter

TIMETX IDMERCHANTAMOUNTML SCOREVERDICT

tx.eventsSOURCE

partitions12

replication3x

throughput1,247 msg/s

consumer lag12 ms

retention7 days

tx.flaggedSINK · REVIEW

thresholdscore > 0.6

routes tomanual-review

last 24h14,827

false positive3.2%

SLA review4 hours

tx.blockedSINK · AUTO

thresholdscore > 0.8

routes toauto-block + SOC

last 24h2,143

saved (24h)₺ 4.2M

PDF reportsauto