Telegram Blocking: Technical Risks and Lessons from Iran | Analysis

Why Blocking Telegram Is Technically Disadvantageous: Lessons from Iran for the Russian Runet

Why Blocking Telegram Is Technically Disadvantageous: Lessons from Iran for the Russian Runet

Russian authorities are reconsidering their stance on Telegram restrictions, realizing that a full blockade of the messenger would trigger cascading infrastructure failures and fail to achieve control objectives. This isn't just due to social tensions—it's also because of the platform's deep integration into corporate and government systems, making any blockade technically destructive.

Technical Integration of Telegram into the Russian Runet

Telegram has long outgrown private messaging. Today, it's a critical platform for automating business processes via bots, delivering notifications from government services, and handling corporate communications. Experts estimate that over 70% of Russian online services rely on the Telegram API for notifications and chatbots.

Trying to isolate the messenger at the network level would spark a chain reaction: bot interfaces going offline, CRM system disruptions, and users unable to receive alerts from banks or government services. Sectors dependent on instant communication—like logistics, fintech, and emergency services—are especially vulnerable.

The key point: Telegram isn't a closed ecosystem. Its API is embedded in countless third-party apps and services, so a blockade wouldn't just hit the messenger—it would cripple tens of thousands of dependent solutions. This sets off a "domino effect," where limiting one service paralyzes interconnected systems.

Iranian Precedent: Data and Consequences

Iran's 2017 case remains the go-to example. After blocking Telegram—which 80% of the country's internet users relied on—daily traffic to Persian-language channels plummeted from 2.4 billion to 850 million visits. But within three weeks, it rebounded to 1.6 billion as users en masse switched to VPNs.

The real damage was to infrastructure. Efforts to block VPNs caused outages in data centers and cloud services, since filtering hit shared IP pools. A Tehran University study revealed:

• 40-60% drop in connection speeds for legitimate business services
• 25% rise in commercial app failures
• Heavier load on government IT systems from surging alternative-channel inquiries
• Emergence of a bypass culture: by 2023, 85% of Iranian users were routinely using VPNs

Paradoxically, blockades proved ineffective: rather than controlling information, the state drove widespread adoption of censorship-evasion tools.

Why Blocking a Messenger Causes Infrastructure Failures

Modern messengers like Telegram operate as open-API platforms, creating two key vulnerabilities during blockades:

• Critical Service Dependencies: Government portals, banks, and corporate tools use Telegram for push notifications and chatbots. Cutting API access breaks these integrations.
• Shared Network Infrastructure: IP or domain blocks hit shared resources. In Russia, for instance, Telegram leverages CDN networks also used by legit services. Traffic filtering inflicts "collateral damage" on unrelated projects.

Technical analysis by FSUE GRCC confirms that selectively blocking Telegram—with its encryption and distributed setup—demands deep packet inspection (DPI). This tanks network performance and spikes latency. Telecom operators would need massive hardware upgrades, with costs far outstripping any "control" gains.

Conclusions for Regulators

Any decision to block Telegram in Russia must weigh three dimensions:

• Technical: Restrictions would unleash cascading failures akin to Iran's, without delivering control.
• Economic: DPI rollout and fallout mitigation costs would dwarf any regulatory "benefits."
• Social: VPN proliferation would fragment the internet audience and undermine government outreach.

Iran's lesson—where 90% of users routinely bypassed blocks five years later—shows regulators that network bans flop against deeply embedded platforms. Smarter: API-based rules and dev partnerships.

Key Points

• Blocking Telegram would cascade failures across thousands of services using its API for notifications and bots.
• Iran's experience: traffic rebounds in 3 weeks via VPNs; infrastructure scars are permanent.
• Deep packet inspection (DPI) for targeted blocks is uneconomical—hardware costs soar, network speed tanks.
• 85% of users in blocked-messenger countries go full-time on VPNs, rendering bans counterproductive.

— Editorial Team