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0x4lter
rep. 90 days
295pts
rep. all time
298pts
rank
686
accepted
9
valid
89%
total
25
streak
Exceptional
Certifications
OffSec - OffSec Certified Professional (OSCP)
Issue date: 11/22/2025
Expiration date: 11/22/2028
Interests
API
Network / Infrastructure
Source Code Review
Web Hacking
Education
IT Services
Manufacturing - Consumer
Media & Entertainment
Public Services
Achievements
Activity
External Accounts
Unlocked Achievements
program_top_ten
one_valid_submission
low_severity
Bug Baron
Bug Baron
Reach the top 10 on a program quarterly leaderboard
4/1/2026
Shell Commander
Shell Commander
New
Collaborate on a valid submission
6/29/2026
Profile Pwner
Profile Pwner
Complete your profile
4/10/2026
Gold Finder
Gold Finder
Reach 10 valid submissions
6/17/2026
Activity
0x4lter's submission in Randstad has been rejected [Duplicate] by Randstad
about 6 hours ago
0x4lter created submission in Randstad from Randstad
about 7 hours ago
0x4lter created submission in Randstad from Randstad
about 7 hours ago
0x4lter created submission in Randstad from Randstad
about 7 hours ago
0x4lter created submission in Randstad from Randstad
about 7 hours ago
0x4lter's submission in Randstad has been rejected [Duplicate] by Randstad
1 day ago
0x4lter created submission in Randstad from Randstad
1 day ago
0x4lter created submission in Randstad from Randstad
1 day ago
0x4lter's submission in Randstad has been accepted by Randstad
1 day ago
0x4lter's submission in Randstad has been accepted by Randstad
1 day ago
0x4lter created submission in Randstad from Randstad
4 days ago
0x4lter's submission in Randstad has been rejected [Duplicate] by Randstad
4 days ago
0x4lter's submission in Randstad has been accepted by Randstad
4 days ago
0x4lter created submission in Randstad from Randstad
4 days ago
0x4lter created submission in Randstad from Randstad
4 days ago
0x4lter created submission in Randstad from Randstad
4 days ago
0x4lter's submission in has been rejected [Duplicate]
8 days ago
0x4lter created submission in Randstad from Randstad
8 days ago
0x4lter's submission in Nestlé VDP has been accepted by Nestlé
11 days ago
0x4lter's submission in has been rejected [Duplicate]
22 days ago
Top contributions
 The Coca-Cola Company Vulnerability Disclosure Program
Randstad
BMW Group
Nestlé VDP
De Volkskrant
Algemeen Dagblad
Last contributions
 Randstad
Nestlé VDP
The Coca-Cola Company Vulnerability Disclosure Program
BMW Group
Algemeen Dagblad
De Morgen
External statistics
Not linked
Not linked
Not linked