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Summary Edit

"Sentry is an antivirus that when activated copies itself to other nodes. It spreads
fast and deletes enemy programs along the way. Upgrade it to make it stronger."

The Sentry is an offensive Security Node. During the Brute Force phase of a hack, the Sentry simultaneously spreads an Antivirus to all connected nodes.

The maximum level a Sentry can be upgraded to is 21[1]. The maximum number of Sentries you can have on your network is five. Unlike Business Nodes, there are no restrictions on deleting Sentry nodes from the network.

Antivirus InstallationEdit

In order to install the antivirus program on a node, it must first be secured. Secured nodes are represented by having a black base. The sentry (or any node that already has an antivirus installed) is able to secure neighboring nodes by sending data packets ("pulses") - represented by small black dots - to its neighbors at a rate of one per second. After the node is secured, the antivirus program can be installed by sending a final and much larger pulse that completes the installation 0.5 seconds after arriving.

The level 1 antivirus program requires 20 pulses (or 20 seconds) to secure a node, and 21.5 seconds before the new node is ready to send out the program to other nodes. Higher levels of antivirus require fewer pulses to secure a node, but always require the final larger install pulse. This means that you can speed up antivirus installation by having more than one connected node sending pulses. However, one final pulse will always add 1.5 seconds at the end (1 second to send the install, and 0.5 to run the install) regardless of how many connections are being used to secure a node.

Nodes installed with an antivirus will simultaneously spread to other nodes and attack connecting nodes that have been captured, at a rate of once per second. A node with an antivirus will stop spreading and attacking if it has been captured but, if recaptured by Security Nodes, the node will retain the original antivirus and continue spreading and attacking as usual.

Antivirus from a higher level Sentry will overwrite the antivirus produced by a lower level Sentry.

Statistics Edit

  • Notes: While the Sentry is technically allowed to upgrade at earlier levels than displayed, the $ Capacity that can be held at those levels is not sufficient to purchase the upgrade. "Required Core Level" displays the highest value of both "Core Level" and "Core Level required to purchase the appropriate Database(s)."
Defensive Stats
125085% per pulse
20 seconds
228095% per pulse
20 seconds
331010~5.26% per pulse
19 seconds
434012~5.26% per pulse
19 seconds
538014~5.88% per pulse
17 seconds
642016~5.88% per pulse
17 seconds
7470196.25% per pulse
16 seconds
8520226.25% per pulse
16 seconds
958025~6.67% per pulse
15 seconds
1064028~6.67% per pulse
15 seconds
1171032~7.14% per pulse
14 seconds
1279037~7.14% per pulse
14 seconds
1387543~7.69% per pulse
13 seconds
1497049~8.33% per pulse
12 seconds
151,08057~8.33% per pulse
12 seconds
161,20065~8.65% per pulse
12 seconds
171,33075~8.65% per pulse
12 seconds
181,47586~9.09% per pulse
11 seconds
191,63599~9.09% per pulse
11 seconds
201,81511410% per pulse
10 seconds
212,01513110% per pulse
10 seconds
Construction Stats
Core Level
1$500501 Minute1
2$1,00015030 Minutes2
3$8,0002001 Hour2
4$32,0002502 Hours3
5$125,0003004 Hours4
6$250,0003758 Hours5
7$400,00045012 Hours6
8$600,00050024 Hours7
9$900,00065036 Hours7
10$1,500,00080048 Hours7
11$2,000,00085060 Hours7
12$2,500,00090072 Hours8
13$3,000,00095092 Hours8
14$3,500,0001,00096 Hours9
15$4,000,0001,080104 Hours9
16$4,750,0001,160112 Hours9
17$5,500,0001,250120 Hours10
18$6,500,0001,330128 Hours10
19$7,500,0001,410136 Hours11
20$8,500,0001,500144 Hours11
21$10,000,0001,660160 Hours12
Totals$61,566,50016,8151,359 Hours
31 Minutes

Gallery Edit

Sentry 01 Sentry 02-03 Sentry 04-05 Sentry 06-07 Sentry 08-09
Level 1 Levels 2-3 Levels 4-5 Levels 6-7 Levels 8-9
Sentry 10-12 Sentry 13-15 Sentry 16-18 Sentry 19-21
Levels 10-12 Levels 13-15 Levels 16-18 Levels 19-21

Tips Edit

Placement / AmountEdit

The maximum number of Sentries you can have is 5. This number increases (from one) by upgrading the Core to level 2, 5, 9 and 13. However, having more than 2 or 3 Sentries can be ineffective, as this number is usually enough to spread the antivirus program together with the other Security Nodes in your network. If you have more than three, consider if you want to remove it and build extra resources or Security nodes. There are exceptions though, where having four Sentries will help you out against specific attacks, such as Wraiths.

The optimal placement for sentries is usually in the center of your network, connected straight to your main Security Nodes. The antivirus program will spread quickly in the front and just a bit longer in the back. If your defenses are rather spread out, then you can use two of them if they are connected correctly to ensure that all the nodes get the antivirus program.

If your network is poorly constructed, a Sentry could be rendered useless as described in the section below.

Tips for Offense Edit

Sentries have four Program slots and a relatively high Firewall. A good tactic early-game for new players against a poorly built network: if the only Sentry is right at the beginning and is not directly connected to a Security Node, capture it as fast as possible and no antivirus will be spread at all in the network, making the network easy to compromise.

If a network only has one high-level sentry, it is especially vulnerable to Wraiths. Once the Sentry is wraithed, no antivirus (or only low-level antivirus) will spread through the network.

Tips for Defense Edit

Placing a Sentry too close to a netConnection and not connected to your defenses will result in the Sentry getting captured too fast, likely preventing it from spreading its antivirus. This not only weakens all other nodes, but your main Security Nodes especially. Proper Sentry placement is crucial in that your Business Nodes are close enough receive the antivirus program, but not so that your Security Nodes as too far away to receive the antivirus program.

Black Security Nodes, such as other Sentries, Black ICEs and Turrets work well when connected to a Sentry. Antivirus is passed on to them almost instantly, and they will spread the antivirus to all connected nodes that are not captured by an attacker.

Other TipsEdit

  • Nodes that are either being upgraded or disabled by a Wraith will receive the antivirus, but will not spread it to other nodes and will not be able to attack with the antivirus.
  • The faster you take down Sentry nodes, the better. Don't give it time to spread over the network too much.
  • Sentries that are too close to netConnections are especially vulnerable to intruder's programs because netConnections cannot be captured or reclaimed.
  • Only one instance of the Sentry's antivirus can be installed on a node. Putting two Sentries next to each other doesn't make your defense two times stronger.
    • However, it does increase the amount of antivirus received by the node, meaning that the node will receive the antivirus two times faster.
  • Connecting the Sentry to other security nodes, like a Turret or Black ICE will make it spread faster, since they are already secured nodes. The antivirus can be installed on Security Nodes straight away and enable them to spread the antivirus program further.
  • When a network's security is activated, Sentries start installing the antivirus program to all connected nodes simultaneously.
  • Nodes that have the antivirus program installed will also start spreading the antivirus to all of their neighboring nodes simultaneously.
  • There is a visual display at the bottom part of a node during antivirus installation. The white part turns black starting at the bottom. When the antivirus is fully installed, the node becomes completely black.
  • The antivirus from Sentries of higher level will overwrite that of lower level Sentries in a network. Nodes which already have lower level antivirus on them will act similarly to black Security Nodes - they will receive the large pulse immediately. As such, many players install extra sentries on their networks to spread the antivirus faster.


A Sentry is one type of ICEs found in the Netrunner collectible card game.

References Edit

  1. Trickster Arts Forums - Max Level
Hackers Wikia - Nodes List
Nodes Programs Gameplay
Business Nodes

B-coin Mine 19-21B-coin Mine  B-coin Mixer 19-21B-coin Mixer  Structure ConnectionnetConnection  Core 11-12Core  Database 19-21Database  Server Farm 19-21Server Farm 

Security Nodes

Black ICE 19-21Black ICE  Code Gate 19-21Code Gate  Guardian 21Guardian  Scanner 19-21Scanner  Sentry 19-21Sentry  Turret 19-21Turret 

Hacking Nodes

Compiler 04Compiler  Evolver 11-12Evolver  Program Library 17-21Program Library 

A.I. Nodes

Beetle ImageServing A.I. Beetle  Hawk ImageServing A.I. Hawk  Squid ImageServing A.I. Squid 

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