Immunity Networks

Immunity Networks Security, Availability, Performance – These were the three objectives we focused upon when we esta Ltd.

This is the Official page for Clients, Employees and Friends of Immunity Networks and Technologies Pvt.

23/04/2026

Happy Birthday to a Pioneer of Connectivity — Ray Tomlinson, born April 23, 1941.

In 1971, Tomlinson sent the first email between two computers on ARPANET. He chose the @ symbol to separate username from machine name. A decision that took about a minute, now encoded in 4 billion email addresses worldwide.

The first email? He couldn't remember what it said. He was testing software, not making history.

Today, 330 billion emails are sent every day using the system he built in a few weeks, on a part-time programming job, at BBN in Cambridge.

Full story: https://blog.immunitynetworks.com/ray-tomlinson-the-man-who-invented-email-and-chose-the-at-symbol/

21/04/2026

Today in History of Communication: April 21, 753 BC — Rome is traditionally founded.

The Roman road network was the world's first communication infrastructure at scale: 400,000 kilometres, hub-and-spoke topology, a state postal relay system (the cursus publicus) that could carry messages from Rome to the Rhine in nine days.

When the Empire fell, that infrastructure collapsed — and communication speed across Europe didn't recover for over a thousand years.

Infrastructure enables civilisation. Always has: https://blog.immunitynetworks.com/april-21-the-roman-roads-that-invented-the-network/

20/04/2026

Today in History of Communication: April 20, 1964 — AT&T unveils the Picturephone at the World's Fair.

Live two-way video calling, decades before Zoom. It worked perfectly. Crowds queued to try it. And then... fewer than 500 commercial subscribers by 1973, and the service shut down in 1974.

What went wrong? Not the technology. The infrastructure — broadband internet, free devices, universal pe*******on — wouldn't exist for another 50 years.

The most instructive failure in communication history: https://blog.immunitynetworks.com/april-20-1964-the-picturephone-50-years-too-early/

19/04/2026

Today in History of Communication: April 19, 1965 — Gordon Moore publishes Moore's Law.

Four pages in a trade magazine. A chart with five data points. A prediction that became the organising principle of the global technology industry for 60 years.

64 transistors in 1965. 134 billion on a single chip today. Every router, every smartphone, every data centre is the product of that exponential curve.

Read the full story: https://blog.immunitynetworks.com/april-19-1965-moores-law-the-prediction-that-built-the-digital-age/

18/04/2026

Today in History of Communication: April 18, 1955 — Albert Einstein passes away.

He never saw a laser, a GPS device, or a fiber optic cable. But every one of those technologies is built on his physics.

The photoelectric effect → fiber optic detectors. Stimulated emission → lasers → the internet backbone. Special and general relativity → GPS accuracy. Without Einstein's 1905 miracle year, the connected world we live in today would not exist.

Full story: https://blog.immunitynetworks.com/april-18-1955-the-physicist-who-built-the-internet/

17/04/2026

Today in History of Communication: April 7, 1964 — IBM announces the System/360.

It was the most important product announcement in computing history. A $5 billion gamble. The first compatible computer family. The 8-bit byte. The template for every software platform that followed.

Mainframes running System/360 architecture still process most of the world's financial transactions. Some bets stay paid off for 60 years.

Full story on our blog: https://blog.immunitynetworks.com/april-17-1964-the-day-ibm-bet-its-future-on-the-system-360/

Born today in 1867: Wilbur Wright. Not a government programme, not a university grant — just a bicycle shop, a homemade ...
16/04/2026

Born today in 1867: Wilbur Wright. Not a government programme, not a university grant — just a bicycle shop, a homemade wind tunnel, and twelve seconds at Kitty Hawk that opened the sky to humanity. The Wright brothers proved that the biggest breakthroughs in connectivity don't always come from the biggest budgets. Read more about the bicycle mechanic who taught the world to fly.



https://blog.immunitynetworks.com/?p=106

Happy birthday to the original systems thinker 🎨 Leonardo da Vinci, born April 15, 1452, filled 13,000 pages with design...
15/04/2026

Happy birthday to the original systems thinker 🎨 Leonardo da Vinci, born April 15, 1452, filled 13,000 pages with designs for flying machines, automatons, and mechanical systems centuries ahead of their time. He didn’t just imagine the future — he engineered it on paper, connecting ideas across disciplines the way modern networks connect devices. Today’s post explores what he has to teach network engineers. Read the full story on our blog. https://blog.immunitynetworks.com/?p=104

He wrote one of the most important equations in engineering history on a newspaper during his morning commute. Harold Bl...
14/04/2026

He wrote one of the most important equations in engineering history on a newspaper during his morning commute. Harold Black’s negative feedback amplifier made transcontinental phone calls possible — and it came to him on the Hoboken ferry in 1927. Without his invention, long-distance communication as we know it simply wouldn’t exist. Every network we build at Immunity Networks owes something to that ferry ride. ⚡ https://zurl.co/WpuQB

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