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SOC EKİPLERİNİN PROBLEMLERİNE
GÜNCEL YAKLAŞIMLAR
O N U R A L A N B E L
N E T S E C T R
2
Hakkımda
• Bilgisayar Mühendisi (İYTE)
• Kurucu @cricomtr (cri.com.tr)
• Geliştirici @TaintAll (taintall.com)
• Uygulama Güvenliği Araştırmacısı
• Github: github.com/onura
• Twitter : @onuralanbel
• https://packetstormsecurity.com/search/?q=onur+alanbel
Görev ve
Sorumluluklar
SİBER OLAY ÖNCESİ
• Logların merkezi olarak yönetilmesi
• Farkındalık çalışmaları
• SızmaTesti vb sonuçlarının analizi
SİBER OLAY ESNASINDA
• Operasyonel birimlerle koordinasyon
• Adli birimler, basın vb. koordinasyon
SİBER OLAY SONRASI
• Raporlama
• Ders çıkarma ve iyileştirme
4
DETAY ANALİZLER YAPMAK
İHTİYAÇ DURUMUNDA AKSİYON ALMAK
ALARMLARA BAKMAK
LOGLAMA ALTYAPISININ BAKIMI VE DEVAMLILIĞINI SAĞLAMAK
Pratikte Olan
5
01 02 03 04 05
WEB
APPLICATION
ATTACK
MISC EXPLOIT
Problem I
Ekibin analiz gücünden çok daha fazla alarm oluşması
VIRUS FOUND
PORT SCANINTRUSION
ATTEMPT
6
01
02
03
Çözüm I
Daha iyi korelasyon
Optimizasyon /Tuning
Ekibin gücünü arttırma
7
Birbiriyle ilişkisi olabilecek alarmları
farklı ekip üyelerinin analiz etmesi
AHMET
1
MUSTAFA
3
AHMET
4
KADİR
6
GİZEM
2
MURAT
5
CANAN
8
HAKAN
7
Problem II
8
01
Çözüm II
Ekip içinde koordinasyonu arttırma
9
01 02 03 04 05
Problem III
Biriken alarmlardan önce hangisine bakılmalı
10
Çözüm III
01
02
Alarmları önceliklendirme
SIEM skorlaması ne kadar detaylı ?
11
05:09 05:12 10:30 11:45
Olayın gerçekleşme
zamanı
1
2
SOC ekibine alarmın
düşmesi
SOC ekibinin alarmı
incelemeye başlaması
3
4
Delillerin toplanması
Problem IV
Olayın olduğu zaman ile analiz zamanı arasında geçen süreden dolayı delil kaybı
12
01
Çözüm IV
Otomasyon
13
77%
63%
50%
37%
22%
Problem V
Güvenlik ürünlerine yapılan yatırım
ne kazandırdı ?
14
01
Çözüm V
Ürünlerden elde edilen çıktının analizi ve raporlanması
0
40
80
120
160
April May June July August
15
SOC ekiplerine yapılan yatırım
ne kazandırdı ?
Problem VI
16
Çözüm VI
01
02
Ticketing sisteminden elde edilen çıktının analizi ve
raporlanması
Gerçek olaylarla karşılaştırma imkanı
Bonus
Şirketin kendine has güvenlik
risklerine göre yatırım alanlarını
önceliklendirebilir.
17
18
SIEM’de oluşan alarmları analiz et
ve tehditleri belirle
Bizim Çözümümüz
Kill Chain adımları ve sızma
senaryolarının parçalarını
yakalayabilmek için tehditleri
analiz et
Tehditler üzerinden IP
repütasyonundan host IoC’lerinin
toplanmasına kadar farklı veri
zenginleştirme adımları gerçekleştir
Tehditleri önceliklendirmek için
risk skorlama algoritmasını çalıştır
Teşekkürler
SOC EKİPLERİNİN PROBLEMLERİNE GÜNCEL YAKLAŞIMLAR
www.cri.com.tr

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SOC Ekiplerinin Problemlerine Güncel Yaklaşımlar