Renata Zawrotna

Hellonext

Business Development Manager - Poland

VanOnGo

- Launched/managed delivery operations (same-day, next-day, prescheduled) for multiple clients across Ukraine, Kazakhstan, Romania,
- Designed and optimized a mass hiring process for onboarding hundreds of couriers,
- Collaborated on analyzing client needs&optimizing the onboarding process and integration into company operations
- Led a high-performing team of 6 Ops/CS specialists

Head of Service Execution 

bafood

- Led the launch of a new business line: online alcohol dark stores
- Owned the P&L for Delivery Operations

Country Operations Manager

- Building last mile delivery from scratch, hiring a courier fleet with 0 cost 
- Day-to-day management of the courier fleet (hiring, training, daily monitoring of, coordination of vehicles for delivery, payment systems, cash circulation)
- Overseeing last-mile delivery (defining and managing delivery zones, the most efficient areas delivery times, regions and cities, etc.)
- Creating all the processes from scratch (from the dark kitchen ops to the customer's door) 
- Overseeing the work of customer service and courier support 
- Managing deliveries through collaborative applications
- Managing operations in the largest Polish cities
- Bringing 0,5 mln in cost reductions 
- Helped to develop and improve the courier application + delivery system

Head of Delivery Operations

BARBORA Polska Sp. z o.o.

- Building a courier and last mile delivery fleet from scratch ( hiring, training, implementing procedures, monitoring daily work) 
- Planning operational strategy for 17 DS in Warsaw (testing and implementation of internal processes, supervision of DS supervisors, couriers, coordination of external stakeholders) 
- Together with the IT team, development and implementation of an internal application and delivery management system. 

Startup shut down operations on 22.08

Riders Operations Manager

JOKR

- Projecting JOKR's expansion strategy in Poland
- Evaluating & analyzing business opportunities in the Polish market
- Working on scaling recruitment processes
- Developing operational processes for several hundred DS

Expansion Launcher

- Building and improving operational processes in 16 DS in Warsaw,
- Managing and tracking the performance of 35 DS Supervisors and over 200 DS Stuff employees,
- Daily management of courier fleet (hiring, training, scheduling, last mile delivery improvement),  
- Analyzing on daily basis key operational metrics, making short and long term forecasts for last mile delivery operations, 
- Hiring and effectively training over 150 DS Stuff employees
- Working on operational process improvements together with area managers

Operations Supervisor

MDDP

Tax Consultant

Dentons

Ambasador

RK Legal

Legal Intern

ELSA Warszawa

Director of the Nationwide Moot Court in Commercial Arbitration

Karwowski Kancelaria Prawa Gospodarczego

Last mile delivery 🚛 | Green energy 🔋 | Foodtech 🥙

Experienced manager with a proven track record of building operations from scratch, last mile deliveries and internal processes in tens of dark stores&dark kitchens. 

I have successfully managed growth strategy and operating costs (+0.5 mln of cost optimisation in 8 months). I directly managed a fleet of over 300 employees across the country.  

Witnessed the collapse of 3 startups, which is a unique experience.

Privately: sports enthusiast and former national team representative in kyokushin karate.

Cyber Security Consultant. Building ITShorts. - I write about technology through a human lens. Views are my own.

Chirag has spent almost 15 years in cybersecurity and worked in 10 different countries with talented cyber engineers. So, he knows the difference between a virus and a worm. 

Early in his career, he provided network security for Fortune 500 clients before advancing to cybersecurity, where he then spent his time learning and securing multiple clouds.  He won several prestigious awards and earned around 26 technical certifications.

His journey led him to Australia, where he worked with the government before starting his company and consulting for South Australia Health Department and a major bank. 

Currently, he is leading a team of people much smarter than him at Cybernara. You can find him geeking out on LinkedIn. 

Also, don’t forget to say hi.

Chirag Goswami

💳🔐 Apple Pay vs Google Pay: How secure are they really?
Both Apple Pay and Google Pay use tokenization, but they handle your card data very differently.

🍎 Apple Pay

Your real card number is never stored on Apple servers.

A unique Device Account Number (DAN) is created and stored securely on the device chip.

During payment, only the token is shared with the merchant and bank.

Even Apple cannot see your actual card details.

🤖 Google Pay

Card information is securely stored on Google servers.

A payment token is generated and used for transactions.

The real card number is shared only with the bank, not the merchant.
⚖️ Why this matters

Both systems are secure, but the trust model is different.

Apple leans toward on-device security and minimal data exposure.

Google relies more on cloud-based token management.

🚀 Choosing a payment system is about more than convenience. It’s about understanding where your data lives.

#PaymentSecurity #ApplePay #GooglePay #Tokenization #CyberSecurity #FinTechSecurity #DataProtection #Cybernara

💡 LinkedIn Top Voice💡 || Cyber Security || Cybernara - We’ve Only One Mission: Provide the Best Cyber Security Solution

🛡 Identity & Access Management (IAM): The Control Plane of Modern Security
Every login, every permission, every access request starts with identity.

That’s why IAM sits at the center of security, compliance, and fraud prevention.
These are the core IAM capabilities every organisation should get right:

🔄 Identity Lifecycle Management

Automate onboarding and offboarding, enforce MFA, RBAC, and strong password policies.

🔐 Access Management

Control who can access what using SSO, just-in-time access, and adaptive authentication.

📂 Directory & Identity Stores

Securely manage users, groups, roles, and directory services across environments.

🔑 Authentication Controls

Strengthen logins with MFA, biometrics, and context-aware authentication.

📊 Fraud & Anomaly Detection

Identify account takeovers, suspicious behavior, and fraud using analytics and behavioral signals.

✅ Audit, Governance & Compliance

Maintain visibility, meet regulatory requirements, and reduce identity-related risk.
IAM isn’t just about access.

It’s about trust, control, and accountability.

🔍 At Cybernara, we help businesses design and unify IAM architectures that improve security, simplify compliance, and scale with growth.

💬 Ready to modernize your identity stack? Let’s secure it properly.

#CyberSecurity #IAM #IdentitySecurity #AccessManagement #Authentication #Compliance #FraudDetection #Cybernara

👇🔌 API Architectures explained: Choosing the right one actually matters

APIs are not just endpoints.

They define performance, scalability, security, and developer experience.

🧱 REST

Simple, stateless, and widely used.

Great for CRUD operations and public APIs.

🧠 GraphQL

Clients ask for exactly what they need.

Reduces over-fetching and under-fetching.

📜 SOAP

XML-based and strict.

Still used where compliance, transactions, and WS-Security matter.

⚡ gRPC

High-performance communication using HTTP/2 and Protobuf.

Ideal for microservices and internal systems.

🔁 WebSockets

Real-time, two-way communication.

Perfect for chats, live dashboards, and notifications.

📡 MQTT

Lightweight and event-driven.

Designed for IoT, telemetry, and low-bandwidth environments.

⚠️ Why this matters

Using the wrong API architecture can cause

• Performance bottlenecks

• Security gaps

• Scaling nightmares
There is no “best” API.

There is only the right API for the job.

🚀 Building or securing APIs at scale? Cybernara helps you design, audit, and protect API architectures. Let’s talk.

#APIs #APISecurity 
#Microservices #GraphQL #REST #gRPC #WebSockets #IoT #MQTT #Cybernara

India’s DPDP Act is no longer a draft.

It’s live. It’s strict. And enforcement is real.

Penalties can go up to ₹250 crore per incident.

No grace period.

“No one told us” is not a legal defence.

Most organisations still don’t know:
• What personal data they collect
• Where it flows
• Who has access
• What would break first during an audit or complaint

That’s exactly what our DPDP Readiness & Compliance Assessment is built for.

We map your data flows, identify gaps, prioritise risks, and give you a clear, practical compliance roadmap.

No theory. No templates dumped and forgotten.
If DPDP applies to your business, ignoring it is no longer an option.

⚙️ TCP vs UDP: What’s the Difference—and Why It Matters
TCP and UDP are core transport-layer protocols, but they’re designed for very different purposes. Knowing when to use each one is key to building reliable and high-performance systems.

🟠 TCP (Transmission Control Protocol)

Built for reliability. TCP is connection-oriented and ensures data arrives completely, in order, and without errors.
Commonly used for web browsing, email, and file transfers—anywhere accuracy matters.
• Larger header size

• Guaranteed delivery and packet order

• Flow control and retransmissions included

🔵 UDP (User Datagram Protocol)

Designed for speed. UDP skips connection setup and error correction to minimize latency.
Ideal for real-time use cases like video streaming, voice calls, and online gaming—where speed matters more than perfection.

• Smaller, lightweight header

• No delivery or ordering guarantees

• Faster transmission with lower overhead

📡 Delivery Modes
• Unicast – One-to-one communication (used by both TCP and UDP)

• Multicast / Broadcast – One-to-many communication (commonly UDP-based)

📌 Why This Matters
Choosing the wrong protocol can impact performance, reliability, and user experience.

🛡️ Cybernara helps businesses design network architectures that balance speed, security, and resilience.

📩 Connect with us to optimize your network the right way.

#TCPvsUDP #Networking #NetworkSecurity #CyberSecurity #TransportLayer #InfoSec #Cybernara

APIs are the backbone of every modern app — which also makes them one of the biggest targets for attackers.

A single weak endpoint can expose user data, break authentication, or open the door for abuse.

Here are the core layers that keep APIs secure:

🔐 OAuth2 – Modern token-based authentication so users don’t share passwords.

🔒 HTTPS – Encrypts traffic end-to-end so no one can snoop or tamper with data in transit.

🛡️ WebAuthn – Strong, phishing-resistant authentication using biometrics or hardware keys.

🚪 API Gateway – Central point for authentication, monitoring, routing, throttling, and blocking bad actors.

🔥 Firewalls – Network and app-layer filtering to stop malicious traffic before it reaches services.

🔄 API Versioning – Prevents breaking changes and keeps old clients from exposing vulnerabilities.

⏳ Rate Limiting – Stops brute-force attacks, credential stuffing, and abuse of public endpoints.

✔️ Authorization – Ensures users can only access what they’re allowed to; prevents privilege misuse.

🧹 Input Validation – Blocks injections, malformed requests, and harmful payloads before they hit your backend.

APIs power everything — mobile apps, dashboards, automations, internal tools — and attackers know it.

Strong API security is no longer optional.

If your organisation needs help securing APIs, reviewing architecture, or running a full API VAPT, Cybernara can support you.

#APISecurity #CyberSecurity #OWASP #DevSecOps #CloudSecurity #Infosec #Cybernara

🛡 Security Log Categories You Can’t Ignore
What deserves your attention

From unusual login attempts to unexpected financial activity, logs quietly reveal what’s happening behind the scenes. They’re often the earliest warning signs of a cyber incident.

Six critical log types every organization should monitor:

🔐 Security Logs – Identify potential attacks, breaches, and abnormal behavior.

🌐 Network Logs – Track traffic patterns and spot intrusion attempts early.

🖥 System Logs – Monitor operating system events and diagnose issues.

🧩 Application Logs – Record errors, warnings, and application-level activity.

💳 Transaction Logs – Capture database changes and sensitive financial actions.

📋 Audit Logs – Maintain records of access and configuration changes for compliance.

🔍 At Cybernara, we help organizations transform raw log data into clear visibility—and real security.

💬 Connect with us to strengthen your defenses from within.

#CyberSecurity #LogMonitoring #SIEM #ThreatDetection #ITCompliance #InfoSec #Cybernara

🔋 Is your phone battery deciding what you pay?

An experiment covered by The Economic Times found something disturbing:

📱 Uber fares varied based on phone type (Android vs iOS)

⚠️ Devices with low battery showed higher prices

🎯 Some users got discounts — others didn’t — on the same ride
Most apps can access your device type, battery level, and in-app behaviour.

And today’s pricing algorithms don’t just respond to demand — they react to you.
💡 This isn’t just about Uber. It’s about transparency.

Because if metadata can silently shape what you’re shown or charged...

📉 Where’s the line between personalization and manipulation?

🤔 The real question isn’t “Are companies doing this?”

It’s: How much of our device data is quietly shaping decisions we never see?
#DigitalPrivacy #PricingAlgorithms #Metadata #BehaviouralEconomics #SurgePricing #TechEthics #Cybernara #BatteryGate

“Open” in OpenAI  stood for Open research. Non-profit energy.

Fast forward and the story looks… very different. 💰

Closed models. Commercial deals. Big revenue narratives.

And then there’s the uncomfortable part.

Multiple authors and publishers have alleged that copyrighted books were used to train AI models without permission. Some cases are still playing out in court. 📚⚖️

If “Open” no longer means open-source, what should it mean today?
Transparent training data? Opt-out by default? Fair compensation?

Curious where you stand. 👇

#AI #OpenAI #Ethics #Copyright #DataPrivacy #ResponsibleAI

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The Battle

Renata Zawrotna

Chirag Goswami

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taplio

The Battle

Renata Zawrotna

Chirag Goswami

Followers

Posts

Engagements

Likes

Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Chirag Goswami's LinkedIn Performance

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Performance ScoreChirag Goswami's LinkedIn Performance