ByLock Examination and Digital Forensics Solutions with CDR, CGNAT, GPRS Data
Digital Evidence Analysis with Next Generation Criminal Solutions
ByLock Evidence Analysis and Digital Forensics Reports | Scientific and Impartial Examination
Get expert digital forensics consulting on ByLock Investigations, ByLock detection, User ID deficiency, CDR analyses, and digital evidence validity. Strengthen your defense with scientific reports.
ByLock Investigations, ByLock is a smartphone application that allows anonymous users to exchange encrypted messages. As DNA Criminal and Digital Forensics Consultancy, we provide expert solutions for technical verification, evaluation, and usability of digital evidence in judicial processes. We conduct impartial and scientifically-based analyses in forensic investigations using critical data sources such as CDR, CGNAT and GPRS, particularly focusing on ByLock.
What is ByLock?
ByLock (also known publicly as “Baylock”) was an encrypted mobile messaging application used between 2014-2016. The application allowed:
Encrypted instant messaging
Encrypted voice calls
File sharing
Group chats
Email sending
It was determined that more than 500,000 people had downloaded it before it was removed from the App Store and Google Play.
How is ByLock Usage Detected?
Technical detection of ByLock usage requires multi-faceted digital data analysis in accordance with Supreme Court ByLock decisions. These include:
ByLock Detection and Assessment Report
BTK-sourced CGNAT, CDR, and GPRS records
Device examinations (ByLock application or data remnants)
GBS (Geographic Based Query) Reports
Indictment and court reasoned decisions
A ByLock user must have installed the application on their device, registered, and connected to ByLock servers via IP. All operations are logged with a system-assigned UserID.
What is CDR?
CDR (Historical Traffic Search) is phone call and messaging traffic data kept by GSM operators. These records include:
Dialed numbers
Call date and duration
Connected base stations
Device IMEI information
and many other details. According to Law No. 5651, CDR data must be stored for a minimum of 6 months and a maximum of 2 years.
What are CGNAT and GPRS Data?
What is CGNAT (Carrier Grade NAT)?
CGNAT is a system that allows multiple users to be assigned to a single IP address. However, access records are differentiated by unique port numbers for each user. This enables the detection of which websites different people using the same IP connected to. Connections to ByLock IP addresses are examined using this data.
What is GPRS Data?
GPRS records contain GSM internet usage details:
Connection start and end time
IP address used
IMEI number
Accessed web pages
Data download-upload amount
Base station information
In ByLock investigations, server connections are technically verified through these records.
Supreme Court ByLock Decisions and Evidence Evaluation
In recent Supreme Court decisions regarding ByLock cases, it has been emphasized that CGNAT data alone cannot be sufficient evidence, and must be accompanied by:
IP log records,
User identity (UserID) matches,
Physical findings obtained from the device.
Therefore, it is crucial that all data used in judicial processes be based on scientific analysis.
Expert Support in Digital Forensics and ByLock Analysis
In technical accusations like ByLock, without proper analysis, there is a risk of prosecution with illegal evidence. As DNA Criminal and Digital Forensics, we:
Perform detailed data analysis with digital forensics engineering,
Examine investigation-related digital data using scientific methods,
Prepare court-admissible expert reports.
Technical Report is also presented with Legal DEFENSE.
Technical and legal examination of cases requires a careful and meticulous process. For the best SOLUTION and RESULT-ORIENTED examination of your problems under expert guidance, you can contact us 24/7 for Next Generation Criminal Solutions and consulting (WhatsApp 552 676 11 00).
Why DNA Criminal and Digital Forensics?
✅ Expert technical consulting in ByLock cases
✅ Scientific analysis of CGNAT, CDR, and GPRS data
✅ Evidence evaluation in accordance with Supreme Court precedents
✅ Impartial and technical expert reports
✅ Detailed examination against technical traps such as ByLock, Mor Beyin, VPN routing
✅ Preparation of court-admissible expert reports
Frequently Asked Questions
Can someone be accused without having ByLock installed on their device?
No. Without IP connection, registration (Register), user identity (UserID), and usage logs in the ByLock Server database, suspicion alone is not sufficient.
How reliable are CGNAT records?
Operators are legally required to maintain these records. However, since the same IP address can be assigned to multiple users, port number analysis is critically important.
Frequently Asked Questions (FAQ)
1. What is ByLock and what is it used for?
ByLock is a mobile application that provides encrypted messaging and voice communication. It was actively used between 2014-2016. User identities and connections are stored encrypted on a special server.
2. How can it be determined if someone used ByLock?
ByLock usage is determined through analysis of multiple technical evidence including CGNAT and GPRS records from BTK, IP log data from the ByLock server, user ID, and application remnants found on the device.
3. What are CDR records and what are they used for?
CDR (Historical Traffic Search) records contain details such as time, duration, number, and base station information for calls made by a GSM subscriber. They are used for tracking person location and communication in judicial investigations.
4. What are CGNAT records and why are they important?
CGNAT is a system that assigns the same IP address to multiple users. Therefore, CGNAT records, which must be kept with port numbers, show which subscriber connected to which site and when through an IP. This is critical for identity verification in applications like ByLock.
5. Is it possible to appear in the system without using ByLock?
Yes. Connections redirected to ByLock servers through VPN, shared network usage, or some mobile advertising SDKs can be detected. Therefore, connection alone is not considered definitive evidence; detailed technical analysis is required.
6. What can be understood from BTK CGNAT and GPRS records?
These records reveal details such as which IP a user connected with, at what time, to which server, the IMEI information used, data package amount, and base station information. These records are used for verification in ByLock usage.
7. Can someone be accused even if ByLock is not found on their phone?
Even without the application installed, if server connections and registration processes are detected, usage claims can be made. However, these claims must be supported by technical data. Device examination, IP log record, and user ID matching must be performed.
8. Do you provide digital forensics support to people accused of using ByLock?
Yes. As DNA Criminal, we perform technical analysis of ByLock, CDR, CGNAT, and GPRS data with our digital forensics experts, prepare expert reports, and provide support for the evaluation of court-admissible evidence.
9. What documents are required for ByLock examination?
Prosecutor’s indictment
Reasoned court decision (if available)
CGNAT, GPRS, CDR data from BTK
ByLock Detection and Assessment Report
GBS (Geographic Based Query) reports
10. Is a digital forensics report valid in court?
Yes. Scientific and impartial digital forensics reports prepared by experts can be evaluated as evidence by courts. The methods used in the report, data sources, and technical analyses must be clearly stated.
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