DC Forensic -
Digital Fact-Finding & Private Protection
We uncover fraud schemes, verify identities, and secure evidence in your private environment – discreetly, objectively, and technically sound. In doing so, we create legally secure clarity, enable resilient decisions, and sustainably strengthen your personal security.
Private Forensic Services
Certainty through facts. When digital deception becomes a threat.
We uncover fraud schemes, verify identities, and secure evidence in your private environment – discreetly, objectively, and with a solid technical foundation.
Our Focus: Investigation of Digital Fraud
The internet offers anonymity that is often abused for criminal purposes. We help you find the truth behind the screen:
- Romance Scamming & Loverboy Methods: Behind the “great online love,” there is often a system. We check profiles, verify photos, and analyze communication patterns for plausibility to expose scammers before financial or emotional damage occurs.
- Audio & Video Manipulation (Grandparent Scam 2.0): Fraudsters increasingly use voice cloning (AI-generated voices) to deceive relatives over the phone. We analyze audio recordings and videos for their authenticity.
- Identity Theft & Fake Profiles: We find out whether images and identities have been stolen or AI-generated to lead you astray.
- Internet Fraud Cases: From fake shops to investment fraud – we secure the digital traces of your transactions and interactions.
Our Role: Clarity instead of Emotions
It is important to distinguish our way of working from state or social agencies:
- Not a Police Authority: We are a private expert office. We do not carry out arrests and do not interfere in ongoing police investigations. Our task is purely technical evidence preservation.
- Facts instead of Counseling: We are not a psychological or emotional counseling center. Our focus is exclusively on the analysis of data. We deliver the objective truth – neutral and unbiased.
- The Expert Report: Yes, our results are incorporated into a private expert document. You can use this to strengthen your position when filing a report with the police or as evidence in civil disputes. Whether a report is fully recognized by a court is always at the judge’s discretion, but our compliance with forensic standards (ISO 27037) maximizes the chances of success.
Your Path to Truth (The Process)
- Initial Consultation: You describe your suspicion. We check which digital traces (emails, chats, images, audios) are available.
- Forensic Analysis: We use our high-end tools to prove manipulation or fake identities.
- Result Report: You receive a clear evaluation: Is the material real or fake? Who is (technically) behind it?
Act quickly, but level-headedly
Do not delete any messages or profiles, even if you are angry or disappointed. Every interaction is a potential digital fingerprint. Secure the device and let us handle the professional collection of evidence.
Contact
Do you have a specific suspicion or need resilient clarity? Contact us confidentially – we will examine your case discreetly, with a sound technical basis, and tell you honestly if and how we can help.
The Search for Truth
Glossary & FAQ
- What is "Catfishing" and how do you uncover it?
In catfishing, individuals pretend to be someone else online. We use reverse image forensics, check the metadata of sent images for geographic plausibility, and analyze whether photos were stolen from databases or generated by AI.
- How do I recognize an AI-generated profile picture?
AI images (GANs) often have specific errors in the peripheral areas, illogical backgrounds, or inconsistencies in the iris of the eyes. Our tools find these artifacts that are invisible to the naked eye.
- Can you prove that a voice message is real?
Yes. Through frequency analysis, we can determine if a voice was created by "voice cloning" (AI). We look for unnatural breathing pauses and the lack of emotional micro-fluctuations in the audio track.
- My relative was asked for money on the phone by a familiar voice. What can you do?
This is often a case of deepfake audio. We analyze the recordings (if available) or check the metadata of the calls. Our expert opinion technically confirms that manipulation techniques were used here, which is crucial for insurance and criminal charges.
- I lost money on an online investment platform. Can you help?
We carry out digital forensics: we document the platform, secure email correspondence, and analyze the IP addresses of the perpetrators. This documentation serves as a basis for the investigating authorities to track payment flows.
- Fake documents or screenshots – how can you tell?
Screenshots (e.g., of bank transfers or chat histories) are extremely easy to manipulate. We perform a pixel-level analysis to detect font discrepancies or traces of editing (e.g., using Photoshop).
- Can you recover deleted chat histories from my cell phone?
Yes, provided that the data areas have not yet been overwritten. We use physical extraction to back up fragments of deleted messages from the databases of WhatsApp, Telegram, or Signal.
- Catfishing: The deliberate use of a false identity on social networks, often to feign an emotional relationship. We expose this by comparing biometrics and digital traces.
- Social bot: An algorithm that pretends to be human. We analyze response behavior and interaction metadata to prove that you are not writing to a human being.
- Voice cloning: An AI technique that uses just a few seconds of original material to perfectly imitate a person's voice (e.g., grandchild, partner). Our audio forensics detects the synthetic frequency patterns.
- Reverse image search (forensic): We go beyond simple Google searches and use specialized databases to find the origin of profile pictures in stock archives or third-party social media profiles worldwide.
- Metadata Spoofing: The deliberate falsification of timestamps or GPS data in files. We check the consistency of the internal file structure to detect manipulation of the creation date.
- Scamming indicators: Linguistic and technical patterns in communication that are typical of international fraud rings.
- Digital estate (private): Supporting relatives in legally compliant access to and securing of data belonging to deceased persons for the purpose of clarifying inheritance claims or last wishes.
- Social bot: An automated program that pretends to be human in order to gain trust or spread disinformation.
- Scamming: Collective term for attempts at fraud on the internet (romance scamming, investment scamming, etc.).
- EXIF data: Hidden information in photos (camera type, GPS location, time). We use this to uncover lies about a scammer's whereabouts.
- Phishing: Attempts to obtain your login details via fake websites or emails. We analyze the origin of these emails.
- Metadata timestamps: Timestamps that reveal when a file was actually created – these often differ from the time claimed by the sender.
Yes. Screenshots are easy to fake. We examine the original device or database backups. Any changes made there leave traces in the file system, which we make visible.
Immediate backup of communication metadata. We back up the blackmailer's header data and IP information before they delete the messages to create a basis for criminal prosecution.
Immediate backup of communication metadata. We back up the blackmailer's header data and IP information before they delete the messages to create a basis for criminal prosecution.
- Are you part of the police force? No. We are a private forensic investigation agency. We work independently. Our work often begins where the police are unable to take action (yet) due to a lack of personnel or initial suspicion.
- Is an expert opinion from DC Forensic valid in court? Our expert opinions are private expert opinions. Since we work according to strict forensic standards (ISO/IEC 27037), they are highly effective as qualified party submissions in civil courts or as supporting evidence in criminal proceedings.
- What is the "digital fingerprint" (hash value) in private cases? To prevent anyone from claiming that you have falsified the evidence yourself, we assign a hash value to each secured file. This guarantees that the evidence cannot be altered.
Technical Deep Dive
Forensic Analysis Procedures
To assess the integrity of digital assets beyond doubt, we apply methods based on signal processing, computer-aided statistics, and reverse engineering of AI architectures.
I. Advanced Image & Video Authentication
We do not view image data as pixel matrices, but as the result of a specific signal processing chain (Image Acquisition Pipeline).
- Photo Response Non-Uniformity (PRNU) Analysis: Extraction of the sensor-specific noise pattern using maximum likelihood estimation to verify the link between the medium and the physical sensor (Source Camera Identification).
- CFA Interpolation & Demosaicing Detection: Analysis of interpolation artifacts arising during demosaicing. Discrepancies in the variance of color channel correlations serve as evidence of local inpainting or splicing.
- JPEG Ghost & Double Compression Detection: Analysis of quantization tables in the frequency domain (DCT coefficients) to localize multiple recompression cycles and their spatial discontinuities.
II. Neural Network & Generative AI Diagnostics
In the identification of deepfakes, we leverage the inherent limitations of current diffusion models and GANs.
- GAN Fingerprinting: Identification of specific up-sampling artifacts (checkerboard effects) caused by transposed convolutions (Conv2DTranspose).
- Latent Space Inconsistency: Verification of biometric consistency across time series. We analyze the phenomenon of identity bleeding and inconsistencies in the geometry of the corneal reflection vectors.
- Adversarial Robustness Testing: Use of toolkits to verify whether the material at hand has been protected or manipulated by adversarial perturbations (targeted noise) to deceive detection algorithms.
III. Audio Engineering & Forensic Acoustics
Forensic audio analysis at DC Forensic is based on physical and biometric parameters.
- Electric Network Frequency (ENF) Matching: Extraction of the 50Hz/60Hz hum signal from the recording and cross-referencing with historical grid frequency databases for temporal authentication.
- Formant & Larynx Analysis: Investigation of the resonance frequencies of the vocal tract. We use cepstral analysis to distinguish the physical limitations of human speech from synthetically generated waveforms (vocoders).
- Lossy Compression Artifact Analysis: Examination of the bitstream structure (e.g., MP3/AAC) to prove whether the audio material was transcoded from another source (container forensics).
IV. Data Integrity & Bitstream Forensics
- File System & Metadata Carving: Reconstruction of fragmented data structures and analysis of OOV (Out-of-Vocabulary) data in the headers.
- Hash Collisions & Blockchain Verification: Use of cryptographic procedures to ensure non-repudiation throughout the entire chain of custody.
DC Forensic